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Document And Entity Information - USD ($) $ in Millions	12 Months Ended
Document And Entity Information - USD ($) $ in Millions	Dec. 31, 2016	Feb. 21, 2017	Jun. 30, 2016
Document And Entity Information
Entity Registrant Name	NEWPARK RESOURCES INC
Entity Central Index Key	0000071829
Trading Symbol	nr
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding (in shares)		84,746,098
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 476.0

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 87,878	$ 107,138
Receivables, net	214,307	206,364
Inventories	143,612	163,657
Prepaid expenses and other current assets	17,143	29,219
Total current assets	462,940	506,378
Property, plant and equipment, net	303,654	307,632
Goodwill	19,995	19,009
Other intangible assets, net	6,067	11,051
Deferred tax assets	1,747	1,821
Other assets	3,780	3,002
Total assets	798,183	848,893
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current debt	83,368	7,382
Accounts payable	65,281	72,211
Accrued liabilities	31,152	45,835
Total current liabilities	179,801	125,428
Long-term debt, less current portion	72,900	171,211
Deferred tax liabilities	38,743	26,368
Other noncurrent liabilities	6,196	5,627
Total liabilities	297,640	328,634
Commitments and contingencies (Note 15)
Commitments and contingencies (Note 15)
Stockholders' Equity
Common stock, $0.01 par value, 200,000,000 shares authorized and 99,843,094 and 99,377,391 shares issued, respectively	998	994
Paid-in capital	558,966	533,746
Accumulated other comprehensive loss	(63,208)	(58,276)
Retained earnings	129,873	171,788
Treasury stock, at cost; 15,162,050 and 15,302,345 shares, respectively	(126,086)	(127,993)
Total stockholders’ equity	500,543	520,259
Total liabilities and stockholders' equity	$ 798,183	$ 848,893

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	99,843,094	99,377,391
Treasury stock, shares (in shares)	15,162,050	15,302,345

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Income (Loss) [Abstract]
Revenues	$ 471,496	$ 676,865	$ 1,118,416
Cost of revenues	437,836	599,013	876,999
Selling, general and administrative expenses	88,473	101,032	112,648
Other operating income, net	(4,345)	(2,426)	(1,827)
Impairments and other charges	6,745	78,345	0
Operating income (loss)	(57,213)	(99,099)	130,596
Foreign currency exchange (gain) loss	(710)	4,016	108
Interest expense, net	9,866	9,111	10,431
Gain on extinguishment of debt	(1,615)	0	0
Income (loss) from continuing operations before income taxes	(64,754)	(112,226)	120,057
Provision (benefit) for income taxes	(24,042)	(21,398)	41,048
Income (loss) from continuing operations	(40,712)	(90,828)	79,009
Income from discontinued operations, net of tax	0	0	1,152
Gain from disposal of discontinued operations, net of tax	0	0	22,117
Net income (loss)	$ (40,712)	$ (90,828)	$ 102,278
Income (loss) per common share - basic:
Income (loss) from continuing operations (in dollars per share)	$ (0.49)	$ (1.10)	$ 0.95
Income from discontinued operations (in dollars per share)	0.00	0.00	0.28
Net income (loss) (in dollars per share)	(0.49)	(1.10)	1.23
Income (loss) per common share - diluted:
Income (loss) from continuing operations (in dollars per share)	(0.49)	(1.10)	0.84
Income from discontinued operations (in dollars per share)	0.00	0.00	0.23
Net income (loss) (in dollars per share)	$ (0.49)	$ (1.10)	$ 1.07

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (40,712)	$ (90,828)	$ 102,278
Foreign currency translation adjustments	(4,932)	(26,284)	(22,508)
Comprehensive income (loss)	$ (45,644)	$ (117,112)	$ 79,770

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Treasury Stock
Beginning balance at Dec. 31, 2013	$ 581,054	$ 980	$ 504,675	$ (9,484)	$ 160,338	$ (75,455)
Net income (loss)	102,278				102,278
Employee stock options, restricted stock and employee stock purchase plan	1,647	12	2,970			(1,335)
Stock-based compensation expense	12,411		12,411
Income tax effect, net, of employee stock related activity	1,172		1,172
Treasury shares purchased at cost	(50,596)					(50,596)
Foreign currency translation adjustments	(22,508)			(22,508)
Ending balance at Dec. 31, 2014	625,458	992	521,228	(31,992)	262,616	(127,386)
Net income (loss)	(90,828)				(90,828)
Employee stock options, restricted stock and employee stock purchase plan	(1,007)	2	(402)			(607)
Stock-based compensation expense	14,202		14,202
Income tax effect, net, of employee stock related activity	412		412
Other	(870)		(870)
Foreign currency translation adjustments	(26,284)			(26,284)
Ending balance at Dec. 31, 2015	520,259	994	533,746	(58,276)	171,788	(127,993)
Net income (loss)	(40,712)				(40,712)
Employee stock options, restricted stock and employee stock purchase plan	230	4	(478)		(1,203)	1,907
Stock-based compensation expense	12,056		12,056
Income tax effect, net, of employee stock related activity	1,558		1,558
Issuance of Convertible Notes due 2021	15,200		15,200
Foreign currency translation adjustments	(4,932)			(4,932)
Ending balance at Dec. 31, 2016	$ 500,543	$ 998	$ 558,966	$ (63,208)	$ 129,873	$ (126,086)

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income (loss)	$ (40,712)	$ (90,828)	$ 102,278
Adjustments to reconcile net income to net cash provided by operations:
Impairments and other non-cash charges	12,523	75,508	0
Depreciation and amortization	37,955	43,917	42,030
Stock-based compensation expense	12,056	14,202	12,304
Provision for deferred income taxes	3,352	(503)	(2,328)
Net provision for doubtful accounts	2,416	1,886	1,252
Gain on sale of a business	0	0	(33,974)
Gain on sale of assets	(2,820)	(1,364)	(1,369)
Gain on extinguishment of debt	(1,615)	0	0
Excess tax benefit from stock-based compensation	0	(204)	(1,278)
Change in assets and liabilities:
(Increase) decrease in receivables	(1,699)	122,399	(53,494)
(Increase) decrease in inventories	16,044	21,309	(14,136)
(Increase) decrease in other assets	2,639	1,191	(546)
Increase (decrease) in accounts payable	(5,213)	(31,974)	23,606
Increase (decrease) in accounts payable	(23,831)	(34,022)	14,828
Net cash provided by operating activities	11,095	121,517	89,173
Cash flows from investing activities:
Capital expenditures	(38,440)	(69,404)	(106,973)
Decrease (increase) in restricted cash	10,060	(17,485)	0
Proceeds from sale of property, plant and equipment	4,540	2,523	3,205
Proceeds from sale of a business	0	0	89,766
Business acquisitions, net of cash acquired	(4,420)	0	0
Net cash used in investing activities	(28,260)	(84,366)	(14,002)
Cash flows from financing activities:
Borrowings on lines of credit	6,437	11,036	62,164
Payments on lines of credit	(14,269)	(12,544)	(62,445)
Proceeds from Convertible Notes due 2021	100,000	0	0
Purchases of Convertible Notes due 2017	(87,271)	0	0
Debt issuance costs	(5,403)	(2,023)	0
Other financing activities	357	(1,673)	(467)
Proceeds from employee stock plans	725	553	3,442
Purchases of treasury stock	(1,226)	(2,283)	(53,130)
Excess tax benefit from stock-based compensation	0	204	1,278
Net cash used in financing activities	(650)	(6,730)	(49,158)
Effect of exchange rate changes on cash	(1,445)	(8,335)	(6,801)
Net increase (decease) in cash and cash equivalents	(19,260)	22,086	19,212
Cash and cash equivalents at beginning of year	107,138	85,052	65,840
Cash and cash equivalents at end of year	87,878	107,138	85,052
Cash paid (received) for:
Income taxes (net of refunds)	(20,709)	10,866	56,568
Interest	$ 8,802	$ 8,464	$ 9,865

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Organization and Principles of Consolidation. Newpark Resources, Inc. was organized in 1932 as a Nevada corporation. In 1991, we changed our state of incorporation to Delaware. The consolidated financial statements include our company and our wholly-owned subsidiaries (“we”, “our” or “us”). All intercompany transactions are eliminated in consolidation.

We are a geographically diversified supplier providing products and services primarily to the oil and gas exploration and production (“E&P”) industry. We operate our business through two reportable segments: Fluids Systems and Mats and Integrated Services. Our Fluids Systems segment provides customized drilling fluids solutions to E&P customers globally, operating through four geographic regions: North America, Europe, the Middle East and Africa (“EMEA”), Latin America, and Asia Pacific. Our Mats and Integrated Services segment provides composite mat rentals, as well as location construction and related site services to customers. In addition, mat rental and services activity is expanding in other markets, including electrical transmission & distribution, pipeline, solar, petrochemical and construction industries across the U.S., Canada and United Kingdom. We also sell composite mats to customers outside of the U.S., and to domestic customers outside of the oil and gas exploration market.

Use of Estimates and Market Risks. The preparation of financial statements in conformity with accounting principles generally accepted in the United States (“US GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates used in preparing our consolidated financial statements include, but are not limited to the following: allowances for product returns, allowances for doubtful accounts, reserves for self-insured retentions under insurance programs, estimated performance and values associated with employee incentive programs, fair values used for goodwill impairment testing, undiscounted future cash flows used for impairment testing of long-lived assets and valuation allowances for deferred tax assets.

Our operating results depend, to a large extent, on oil and gas drilling activity levels in the markets we serve, and particularly for the Fluids Systems segment, the nature of the drilling operations (including the depth and whether the wells are drilled vertically or horizontally) which governs the revenue potential of each well. Drilling activity, in turn, depends on oil and gas commodity pricing, inventory levels, product demand and regulatory restrictions. Oil and gas prices and activity are cyclical and volatile. This market volatility has a significant impact on our operating results.

Cash Equivalents. All highly liquid investments with a remaining maturity of three months or less at the date of acquisition are classified as cash equivalents.

Restricted Cash. Cash that is restricted as to withdrawal or usage is recognized as restricted cash and is included in other current assets in the accompanying balance sheet.

Allowance for Doubtful Accounts. Reserves for uncollectible accounts receivable are determined on a specific identification basis when we believe that the required payment of specific amounts owed to us is not probable. The majority of our revenues are from mid-sized and international oil companies as well as government-owned or government-controlled oil companies, and we have receivables in several foreign jurisdictions. Changes in the financial condition of our customers or political changes in foreign jurisdictions could cause our customers to be unable to repay these receivables, resulting in additional allowances.

Allowance for Product Returns. We maintain reserves for estimated customer returns of unused products in our Fluids Systems segment. The reserves are established based upon historical customer return levels and estimated gross profit levels attributable to product sales.

Inventories. Inventories are stated at the lower of cost (principally average cost) or market. Certain conversion costs associated with the acquisition, production, blending and storage of inventory in our Fluids Systems segment as well as in the manufacturing operations in the Mats and Integrated Services segment are capitalized as a component of the carrying value of the inventory and expensed as a component of cost of revenues as the products are sold. Reserves for inventory obsolescence are determined based on the fair value of the inventory using factors such as our historical usage of inventory on-hand, future expectations related to our customers’ needs, market conditions and the development of new products.

Property, Plant and Equipment. Property, plant and equipment are recorded at cost. Additions and improvements that extend the useful life of an asset are capitalized. We capitalize interest costs on significant capital projects. Maintenance and repairs are expensed as incurred. Sales and disposals of property, plant and equipment are removed at carrying cost less accumulated depreciation with any resulting gain or loss reflected in earnings.

Depreciation is provided on property, plant and equipment, including assets held under capital leases, primarily utilizing the straight-line method over the following estimated useful service lives or lease term:



Computer hardware and office equipment		3-5 years
Computer software		3-10 years
Autos & light trucks		5-7 years
Furniture, fixtures & trailers		7-10 years
Composite mats (rental fleet)		10-12 years
Machinery and heavy equipment		5-15 years
Owned buildings		20-39 years
Leasehold improvements	Lease term, including reasonably assured renewal periods

In 2016, we revised our estimates of the useful lives and residual values of certain of our composite mats included in rental fleet fixed assets within the Mats and Integrated Services segment. We now estimate that certain composite mats which were originally estimated to have a useful life of 7 years with zero residual value will have estimated useful lives ranging from 10 to 12 years with an estimated residual value of 20%. These changes in estimates were recognized prospectively beginning January 1, 2016 resulting in a reduction in depreciation expense for the Mats and Integrated Services segment of approximately $6.1 million, or $0.05 per share, for the year ended December 31, 2016. We expect these changes to have a similar effect on annual results going forward.

Goodwill and Other Intangible Assets. Goodwill represents the excess of the purchase price of acquisitions over the fair value of the net identifiable assets acquired in business combinations. Goodwill and other intangible assets with indefinite lives are not amortized. Intangible assets with finite useful lives are amortized either on a straight-line basis over the asset’s estimated useful life or on a basis that reflects the pattern in which the economic benefits of the asset are realized. Any period costs of maintaining intangible assets are expensed as incurred.

Impairment of Long-Lived Assets. Goodwill and other indefinite-lived intangible assets are tested for impairment annually as of November 1, or more frequently, if an indication of impairment exists. The impairment test includes a comparison of the carrying value of net assets of our reporting units, including goodwill, with their estimated fair values, which we determine using a combination of a market multiple and discounted cash flow approach. If the carrying value exceeds the estimated fair value, an impairment charge is recorded in the period in which such review is performed. We identify our reporting units based on our analysis of several factors, including our operating segment structure, evaluation of the economic characteristics of our geographic regions within each of our operating segments, and the extent to which our business units share assets and other resources.

We review property, plant and equipment, finite-lived intangible assets and certain other assets for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. We assess recoverability based on expected undiscounted future net cash flows. In estimating expected cash flows, we use a probability-weighted approach. Should the review indicate that the carrying value is not fully recoverable; the amount of impairment loss is determined by comparing the carrying value to the estimated fair value.

Insurance. We maintain reserves for estimated future payments associated with our self-insured employee healthcare programs, as well as the self-insured retention exposures under our general liability, auto liability and workers compensation insurance policies. Our reserves are determined based on historical experience under these programs, including estimated development of known claims and estimated incurred-but-not-reported claims.

Treasury Stock. Treasury stock is carried at cost, which includes the entire cost of the acquired stock.

Revenue Recognition. The Fluids Systems segment recognizes sack and bulk material additive revenues upon shipment of materials and passage of title. Formulated liquid systems revenues are recognized when utilized or lost downhole while drilling. An allowance for product returns is maintained, reflecting estimated future customer product returns. Engineering and related services are provided to customers as an integral component of the fluid system delivery, at agreed upon hourly or daily rates, and revenues are recognized when the services are performed.

For the Mats and Integrated Services segment, revenues from the sale of mats are recognized when title passes to the customer, which is upon shipment or delivery, depending upon the terms of the underlying sales contract. Revenues for services and rentals provided by this segment are generated from both fixed-price and unit-priced contracts, which are short-term in duration. The activities under these contracts include site preparation, pit design, construction, drilling waste management, and the installation and rental of mat systems for a period of time generally not to exceed 60 days. Revenues from services provided under these contracts are recognized as the specified services are completed. Revenues from any subsequent extensions to the rental agreements are recognized over the extension period.

Shipping and handling costs are reflected in cost of revenues, and all reimbursements by customers of shipping and handling costs are included in revenues.

Income Taxes. We provide for deferred taxes using an asset and liability approach by measuring deferred tax assets and liabilities due to temporary differences existing at year end using currently enacted tax rates and laws that will be in effect when the differences are expected to reverse. We reduce deferred tax assets by a valuation allowance when, based on our estimates, it is more likely than not that a portion of those assets will not be realized in a future period. The estimates utilized in recognition of deferred tax assets are subject to revision, either up or down, in future periods based on new facts or circumstances. We present deferred tax assets and liabilities as noncurrent in the balance sheet based on an analysis of each taxpaying component within a jurisdiction. We evaluate uncertain tax positions and record a liability as circumstances warrant.

Share-Based Compensation. Share-based compensation cost is measured at the grant date based on the fair value of the award, net of an estimated forfeiture rate. We recognize these costs in the income statement using the straight-line method over the vesting term. Fair value at the grant date is determined using the Black-Scholes option-pricing model for stock options and using the Monte Carlo valuation model for performance-based restricted stock units.

Foreign Currency Translation. The functional currency for substantially all international subsidiaries is their respective local currency. Financial statements for these international subsidiaries are translated into U.S. dollars using the exchange rate at each balance sheet date for assets and liabilities and the average exchange rates in effect during the respective period for revenues and expenses. Exchange rate adjustments resulting from translation of foreign currency financial statements are reflected in accumulated other comprehensive loss in stockholders’ equity whereas exchange rate adjustments resulting from foreign currency denominated transactions are recorded in income. At December 31, 2016 and 2015, accumulated other comprehensive loss related to foreign subsidiaries reflected in stockholders’ equity amounted to $63.2 million and $58.3 million, respectively.

Fair Value Measurement. Fair value is measured as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at a measurement date. We apply the following fair value hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement:


•	Level 1: The use of quoted prices in active markets for identical financial instruments.


•	Level 2: The use of quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active or other inputs that are observable in the market or can be corroborated by observable market data.


•	Level 3: The use of significantly unobservable inputs that typically require the use of management's estimates of assumptions that market participants would use in pricing.

Derivative Financial Instruments. We monitor our exposure to various business risks including interest rates and foreign currency exchange rates and occasionally use derivative financial instruments to manage the impact of certain of these risks. At the inception of a new derivative, we designate the derivative as a cash flow or fair value hedge or we determine the derivative to be undesignated as a hedging instrument based on the underlying facts. We do not enter into derivative instruments for trading purposes.

New Accounting Pronouncements

Standard adopted in 2016

In September 2015, the Financial Accounting Standards Board (“FASB”) issued updated guidance that eliminates the requirement to restate prior periods to reflect adjustments made to provisional amounts recognized in a business combination. The new guidance requires that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The new guidance was effective for us prospectively in the first quarter of 2016; however, the adoption did not have any effect on our consolidated financial statements.

Standards not yet adopted

In May 2014, the FASB amended the existing accounting standards for revenue recognition. The amendments are based on the principle that revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The new guidance is effective for us in the first quarter of 2018. The amendments may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized as of the date of initial application. While we have not fully completed our evaluation of the impacts of these amendments, we do not currently anticipate that the adoption will have a material impact on our consolidated financial statements. We currently anticipate adopting the new guidance retrospectively with the cumulative effect recognized as of the date of initial application in the first quarter of 2018.

In July 2015, the FASB issued updated guidance that simplifies the subsequent measurement of inventory. It replaces the current lower of cost or market test with the lower of cost or net realizable value test. Net realizable value is defined as the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. We will adopt the new guidance prospectively in the first quarter of 2017 and do not expect the adoption to have a material impact on our consolidated financial statements.

In February 2016, the FASB issued updated guidance regarding accounting for leases. The new accounting standard provides principles for the recognition, measurement, presentation and disclosure of leases and requires lessees to recognize both assets and liabilities arising from financing and operating leases. The classification as either a financing or operating lease will determine whether lease expense is recognized based on an effective interest method basis or on a straight-line basis over the term of the lease, respectively. The new guidance is effective for us in the first quarter of 2019 with early adoption permitted. Based on our current lease portfolio, we anticipate the new guidance will require us to reflect additional assets and liabilities in our consolidated balance sheet, however, we have not yet completed an estimation of such amount and we are still evaluating the overall impact of the new guidance on our consolidated financial statements.

In March 2016, the FASB issued updated guidance that simplifies several aspects of the accounting for share-based payment transactions, including the requirement to recognize excess tax benefits and tax deficiencies through earnings as a component of income tax expense. Under current U.S. GAAP, these differences are generally recorded in additional paid in capital and thus have no impact on net income. The change in treatment of excess tax benefits and tax deficiencies also impacts the computation of diluted earnings per share and the associated cash flows will now be classified as operating activities in the consolidated statements of cash flows. In addition, entities will be permitted to make an accounting policy election related to forfeitures which impacts the timing of recognition for share-based payment awards. Forfeitures can be estimated, as required under current U.S. GAAP, or recognized when they occur. We will adopt the new guidance in the first quarter of 2017 with the most significant impact related to income tax consequences. Upon adoption, any excess tax benefits and tax deficiencies on share-based payment transactions will be recognized as a component of income tax expense as discrete items in the reporting period in which they occur. In addition, we will elect to continue estimating forfeitures in determining share-based compensation expense.

In August 2016, the FASB issued updated guidance that clarifies how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This update provides guidance on eight specific cash flow issues. This guidance is effective for us in the first quarter of 2018 and should be applied using the retrospective transition method to each period presented. Early adoption is permitted but all changes must be adopted in the same period. We do not expect the adoption of this new guidance to have a material impact on the presentation of our consolidated statements of cash flows.

In October 2016, the FASB amended the guidance related to the recognition of current and deferred income taxes for intra-entity asset transfers. Under current U.S. GAAP, recognition of income taxes on intra-entity asset transfers is prohibited until the asset has been sold to an outside party. This update requires that entities recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. This update does not change U.S. GAAP for the pre-tax effects of an intra-entity asset transfer or for an intra-entity transfer of inventory. This guidance is effective for us in the first quarter of 2018 and should be applied using a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. We are currently evaluating the impact of the new guidance on our consolidated financial statements.

In November 2016, the FASB issued updated guidance that requires that the statement of cash flows explain the change during the period in the total of cash, cash equivalents, restricted cash and restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for us in the first quarter of 2018 with early adoption permitted and should be applied using a retrospective transition method to each period presented. We are currently evaluating the impact of the new guidance on our consolidated financial statements.

In January 2017, the FASB amended the guidance related to the accounting for goodwill impairments by eliminating step two from the goodwill impairment test. Under the new guidance, if the carrying amount of a reporting unit exceeds its fair value, an impairment loss shall be recognized in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit. This guidance is effective for us for goodwill impairment tests beginning after December 15, 2019. This guidance should be applied prospectively and early adoption is permitted. We are currently evaluating the impact of the new guidance on our consolidated financial statements.

Business Combinations	12 Months Ended
Business Combinations	Dec. 31, 2016
Business Combinations [Abstract]
Business Combinations	Business Combinations In August 2016, we completed the acquisition of Pragmatic Drilling Fluids Additives, Ltd. (“Pragmatic”), a Canadian provider of specialty chemicals for the oil and gas industry, which further expands our fluids technology portfolio and capabilities. The purchase price for this acquisition was $4.4 million, net of cash acquired. The purchase price allocation resulted in amortizable intangible assets of $1.7 million and goodwill of approximately $1.7 million. Goodwill represents the excess of the purchase price over the fair value of the net tangible and intangible assets acquired and is not deductible for tax purposes. The results of operations of Pragmatic are reported within the Fluids Systems segment for the period subsequent to the date of the acquisition. Results of operations and pro-forma combined results of operations for the acquired business have not been presented as the effect of this acquisition is not material to our consolidated financial statements.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1497-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1490-128463

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1486-128463

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
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+ Details

Inventories

12 Months Ended

Dec. 31, 2016

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following items at December 31:



(In thousands)	2016		2015
Raw materials:
Drilling fluids	$	115,399	$	133,934
Mats	1,137		657
Total raw materials	116,536		134,591
Blended drilling fluids components	23,762		25,343
Finished goods - mats	3,314		3,723
Total inventories	$	143,612	$	163,657

Raw materials consist primarily of barite, chemicals, and other additives that are consumed in the production of our drilling fluid systems. Our blended drilling fluids components consist of base drilling fluid systems that have been either mixed internally at our mixing plants or purchased from third party vendors. These base drilling fluid systems require raw materials to be added, as needed to meet specified customer requirements.

In 2016 and 2015, charges of $4.1 million and $2.2 million, respectively, are included in cost of revenues for the Fluids Systems segment related to the reduction in carrying values of certain inventory, primarily resulting from lower of cost or market adjustments. Charges in 2016 primarily related to the Asia Pacific and North America regions and charges in 2015 related to the North America region.

Property, Plant and Equipment

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Our investment in property, plant and equipment consisted of the following at December 31:



(In thousands)	2016			2015
Land	$	11,505		$	11,613
Buildings and improvements	121,967			122,514
Machinery and equipment	248,229			224,974
Computer hardware and software	30,544			29,688
Furniture and fixtures	5,829			5,788
Construction in progress	19,417			20,950
	437,491			415,527
Less accumulated depreciation	(186,700		)	(164,818		)
	250,791			250,709

Composite mats (rental fleet)	100,543			100,341
Less accumulated depreciation - composite mats	(47,680		)	(43,418		)
	52,863			56,923

Property, plant and equipment, net	$	303,654		$	307,632

Depreciation expense was $34.6 million, $39.3 million and $33.2 million in 2016, 2015 and 2014, respectively. As described in Note 1, we revised our estimated useful lives and end of life residual values for composite mats included in our rental fleet as of January 1, 2016 resulting in a decrease in depreciation expense of approximately $6.1 million for the year ended December 31, 2016. Capital expenditures in 2016 included approximately $32.3 million in the Fluids Systems segment, including a total of $27.8 million related to the facility upgrade and expansion of our Fourchon, Louisiana facility, our new fluids blending facility and distribution center in Conroe, Texas, and equipment to support the contract with Total S.A. in Uruguay. Capital expenditures for the Mats and Integrated Services segment totaled $4.6 million during 2016.

In 2016, we recognized a $3.8 million non-cash charge to write-down property, plant and equipment to its estimated fair value in the Asia Pacific region of our Fluids Systems segment resulting from the continuing unfavorable industry market conditions and the deteriorating outlook for the region and a $0.5 million non-cash charge in our Fluids Systems segment to write-down property, plant and equipment associated with the wind-down of our operations in Uruguay. In 2015, we recognized a $2.6 million charge related to assets at a facility in our Fluids Systems segment following our decision to exit this facility. These charges are included in impairments and other charges in our consolidated statement of operations. We used internally developed assumptions in determining the fair values of property, plant and equipment, which are classified within level 3 of the fair value hierarchy.

Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Changes in the carrying amount of goodwill by reportable segment are as follows:



(In thousands)	Fluids Systems			Mats and Integrated Services			Total
Balance at December 31, 2014	$	72,684		$	19,209		$	91,893
Impairment	(70,720		)	—			(70,720		)
Effects of foreign currency	(1,964		)	(200		)	(2,164		)
Balance at December 31, 2015	—			19,009			19,009
Acquisition	1,720			—			1,720
Effects of foreign currency	(54		)	(680		)	(734		)
Balance at December 31, 2016	1,666			18,329			19,995

Goodwill and other indefinite-lived intangible assets are tested for impairment annually as of November 1, or more frequently, if an indication of impairment exists. We determine any impairment of goodwill by comparing the carrying amounts of our reporting units with fair values, which we estimate using a combination of a market multiple and discounted cash flow approach (classified within level 3 of the fair value hierarchy). We also compare the aggregate fair values of our reporting units with our market capitalization. We completed our annual evaluation of the carrying values of our goodwill and other indefinite-lived intangible assets as of November 1, 2016 and determined that the carrying values of each of our reporting units were less than their respective fair values and therefore, no impairment was required.

In 2015, as a result of the further decline in commodity prices and drilling activities, including the projection of lower commodity prices and drilling activities, as well as the further decline in the quoted market prices of our common stock, we determined that the carrying value of our drilling fluids reporting unit exceeded its estimated fair value. As a result, we completed step two of the evaluation to measure the amount of goodwill impairment determining a full impairment of goodwill related to the drilling fluids reporting unit was required. As such we recorded a $70.7 million non-cash impairment charge to write-off the goodwill related to the drilling fluids reporting unit, which is included in impairments and other charges in our consolidated statement of operations.

Other intangible assets consist of the following:



	December 31, 2016							December 31, 2015
(In thousands)	Gross Carrying Amount		Accumulated Amortization			Other intangible assets, net		Gross Carrying Amount		Accumulated Amortization			Other intangible assets, net
Technology related	$	5,766	$	(3,873	)	$	1,893	$	5,077	$	(3,600	)	$	1,477
Customer related	25,158		(21,962		)	3,196		28,069		(19,638		)	8,431
Employment related	1,848		(1,346		)	502		1,625		(975		)	650
Total amortizing intangible assets	32,772		(27,181		)	5,591		34,771		(24,213		)	10,558

Permits and licenses	476		—			476		493		—			493
Total indefinite-lived intangible assets	476		—			476		493		—			493
Total intangible assets	$	33,248	$	(27,181	)	$	6,067	$	35,264	$	(24,213	)	$	11,051

Total amortization expense in 2016, 2015 and 2014 related to other intangible assets was $3.4 million, $4.6 million and $8.0 million, respectively.

In 2016, we recognized a $3.1 million charge for the impairment of customer related intangible assets in the Asia Pacific region of our Fluids Systems segment resulting from the continuing unfavorable industry market conditions and the deteriorating outlook for the region, which is included in impairments and other charges in our consolidated statement of operations. Also, we completed the acquisition of Pragmatic in 2016 resulting in additions to amortizable intangible assets of $1.7 million. See Note 2 for further discussion. We used internally developed assumptions in determining the fair values of intangible assets impaired and acquired, which are classified within level 3 of the fair value hierarchy.

Estimated future amortization expense for the years ended December 31 is as follows:



(In thousands)	2017		2018		2019		2020		2021		Thereafter		Total
Technology related	$	339	$	339	$	339	$	310	$	259	$	307	$	1,893
Customer related	1,632		584		419		313		184		64		3,196
Employment related	437		65		—		—		—		—		502
Total future amortization expense	$	2,408	$	988	$	758	$	623	$	443	$	371	$	5,591

The weighted average amortization period for technology related, customer related and employment related intangible assets is 15 years, 9 years and 5 years, respectively.

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Financing Arrangements

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Financing arrangements

Financing arrangements consisted of the following at December 31, 2016 and 2015:



(In thousands)	December 31, 2016									December 31, 2015
	Principal Amount			Unamortized Discount and Debt Issuance Costs			Total Debt			Principal Amount			Unamortized Discount and Debt Issuance Costs			Total Debt
Convertible Notes due 2017	$	83,256		$	(268	)	$	82,988		$	172,497		$	(1,296	)	$	171,201
Convertible Notes due 2021	100,000			(27,100		)	72,900			—			—			—
Revolving credit facility	—			—			—			—			—			—
ABL Facility	—			—			—			—			—			—
Other debt	380			—			380			7,392			—			7,392
Total debt	183,636			(27,368		)	156,268			179,889			(1,296		)	178,593
Less: current portion	(83,636		)	268			(83,368		)	(7,382		)	—			(7,382		)
Long-term debt	$	100,000		$	(27,100	)	$	72,900		$	172,507		$	(1,296	)	$	171,211

Convertible Notes due 2017. In September 2010, we issued $172.5 million of unsecured convertible senior notes (“Convertible Notes due 2017”) that mature on October 1, 2017, of which, $83.3 million aggregate principal amount was outstanding at December 31, 2016. The notes bear interest at a rate of 4.0% per year, payable semiannually in arrears on April 1 and October 1 of each year. Holders may convert the notes at their option at any time prior to the close of business on the business day immediately preceding the October 1, 2017 maturity date. The conversion rate is initially 90.8893 shares of our common stock per $1,000 principal amount of notes (equivalent to an initial conversion price of $11.00 per share of common stock), subject to adjustment in certain circumstances. Upon conversion, the notes will be settled in shares of our common stock. We may not redeem the notes prior to their maturity date. In 2016, we repurchased $89.3 million aggregate principal amount of our Convertible Notes due 2017 for $87.3 million and recognized a net gain of $1.6 million reflecting the difference in the amount paid and the net carrying value of the extinguished debt, including debt issuance costs. We intend to use available cash on-hand, cash generated by operations, including U.S. income tax refunds, and estimated availability under our ABL Facility to repay the remaining Convertible Notes due 2017.

Convertible Notes due 2021. In December 2016, we issued $100.0 million of unsecured convertible senior notes (“Convertible Notes due 2021”) that mature on December 1, 2021, unless earlier converted by the holders pursuant to the terms of the notes. The notes bear interest at a rate of 4.0% per year, payable semiannually in arrears on June 1 and December 1 of each year.

Holders may convert the notes at their option at any time prior to the close of business on the business day immediately preceding June 1, 2021, only under the following circumstances:

•

during any calendar quarter commencing after the calendar quarter ending on March 31, 2017 (and only during such calendar quarter), if the last reported sale price of our common stock for at least 20 trading days (regardless of whether consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price of the notes in effect on each applicable trading day;


•	during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of notes for each trading day was less than 98% of the last reported sale price of our common stock on such date multiplied by the conversion rate on each such trading day; or


•	upon the occurrence of specified corporate events, as described in the indenture governing the notes, such as a consolidation, merger, or share exchange.

On or after June 1, 2021 until the close of business on the business day immediately preceding the maturity date, holders may convert their notes at any time, regardless of whether any of the foregoing conditions have been satisfied. As of February 24, 2017, the notes were not convertible.

The notes are convertible into, at our election, cash, shares of common stock, or a combination of both, subject to satisfaction of specified conditions and during specified periods, as described above. If converted, we currently intend to pay cash for the principal amount of the notes converted. The conversion rate is initially 107.1381 shares of our common stock per $1,000 principal amount of notes (equivalent to an initial conversion price of $9.33 per share of common stock), subject to adjustment in certain circumstances. We may not redeem the notes prior to their maturity date.

In accordance with accounting guidance for convertible debt with a cash conversion option, we separately accounted for the debt and equity components of the notes in a manner that reflected our estimated nonconvertible debt borrowing rate. We estimated the fair value of the debt component of the notes to be $75.2 million at the issuance date, assuming a 10.5% non-convertible borrowing rate. The carrying amount of the equity component was determined to be approximately $24.8 million by deducting the fair value of the debt component from the principal amount of the notes, and was recorded as an increase to additional paid-in capital, net of the related deferred tax liability of $8.7 million. The excess of the principal amount of the debt component over its carrying amount (the “debt discount”) is being amortized as interest expense over the term of the notes using the effective interest method. The equity component is not remeasured as long as it continues to meet the conditions for equity classification.

We allocated transaction costs related to the issuance of the notes, including underwriting discounts, of $2.7 million and $0.9 million to the debt and equity components, respectively. Issuance costs attributable to the debt component were netted against long-term debt and are being amortized to interest expense over the term of the notes using the effective interest method. Issuance costs attributable to the equity component were netted against the equity component recorded in additional paid-in capital. The carrying amount of the equity component, net of issuance costs and the deferred tax liability related to the conversion feature, was $15.2 million at December 31, 2016. As of December 31, 2016, the carrying amount of the debt component was $72.9 million, which is net of the unamortized debt discount and issuance costs of $24.4 million and $2.7 million, respectively. Including the impact of the debt discount and related deferred debt issuance costs, the effective interest rate on the notes is approximately 11.3%. Based on the closing market price of our common stock on December 31, 2016, the if-converted value of the notes was less than the aggregate principal amount of the notes.

Revolving Credit Facility. In March 2015, we entered into a Third Amended and Restated Credit Agreement (the “Credit Agreement”) which provided for a $200.0 million revolving loan facility available for borrowings and letters of credit through March 2020. In December 2015, the Credit Agreement was amended, decreasing the revolving credit facility to $150.0 million and subsequently, we terminated the Credit Agreement in May 2016, replacing it with an asset-based revolving loan facility as discussed further below. As of the date of termination, we had no outstanding borrowings under the Credit Agreement. In the second quarter of 2016, we recognized a non-cash charge of $1.1 million in interest expense for the write-off of debt issuance costs in connection with the termination.

Asset-Based Loan Facility. In May 2016, we entered into an asset-based revolving credit agreement (the “ABL Facility”) which replaced the terminated Credit Agreement. In February 2017, we amended the ABL Facility primarily to incorporate the Convertible Notes due 2021 that were issued in December 2016 as well as other administrative matters. The ABL Facility provides financing of up to $90.0 million available for borrowings (inclusive of letters of credit) and subject to certain conditions, can be increased to a maximum capacity of $150.0 million. The ABL Facility terminates on March 6, 2020; however, the ABL Facility has a springing maturity date that will accelerate the maturity of the credit facility to June 30, 2017 if, prior to such date, the Convertible Notes due 2017 have not either been repurchased, redeemed, converted or we have not provided sufficient funds to repay the Convertible Notes due 2017 in full on their maturity date. For this purpose, funds may be provided in cash to an escrow agent or a combination of cash to an escrow agent and the assignment of a portion of availability under the ABL Facility. The ABL Facility requires compliance with a minimum fixed charge coverage ratio and minimum unused availability of $25.0 million to utilize borrowings or assignment of availability under the ABL Facility towards funding the repayment of the 2017 Convertible Notes.

Borrowing availability under the ABL Facility is calculated based on eligible accounts receivable, inventory, and, subject to satisfaction of certain financial covenants as described below, composite mats included in the rental fleet, net of reserves and limits on such assets included in the borrowing base calculation. To the extent pledged by us, the borrowing base calculation shall also include the amount of eligible pledged cash. The lender may establish such reserves, in part based on appraisals of the asset base, and other limits at its discretion which could reduce the amounts otherwise available under the ABL Facility. Availability associated with eligible rental mats will also be subject to maintaining a minimum consolidated fixed charge coverage ratio and a minimum level of operating income for the Mats and Integrated Services segment. As of December 31, 2016, we had no borrowings outstanding under the ABL Facility with a total borrowing base availability of $60.5 million. Including the addition of eligible composite mats included in the rental fleet beginning in 2017, total borrowing base availability as of January 1, 2017 was $76.3 million.

Under the terms of the ABL Facility, we may elect to borrow at a variable interest rate plus an applicable margin based on either, (1) LIBOR subject to a floor of zero or (2) a base rate equal to the highest of: (a) the federal funds rate plus 50 basis points, (b) the prime rate of Bank of America, N.A. or (c) LIBOR, subject to a floor of zero, plus 100 basis points. The applicable margin ranges from 225 to 350 basis points for LIBOR borrowings, and 125 to 250 basis points with respect to base rate borrowings, based on our consolidated EBITDA, ratio of debt to consolidated EBITDA, and consolidated fixed charge coverage ratio, each as defined in the ABL Facility. As of December 31, 2016, the applicable margin for borrowings under our ABL Facility is 350 basis points with respect to LIBOR borrowings and 250 basis points with respect to base rate borrowings. In addition, we are required to pay a commitment fee on the unused portion of the ABL Facility ranging from 37.5 to 62.5 basis points, based on the ratio of debt to consolidated EBITDA, as defined in the ABL Facility. The applicable commitment fee as of December 31, 2016 was 62.5 basis points.

The ABL Facility is a senior secured obligation, secured by first liens on all of our U.S. tangible and intangible assets and a portion of the capital stock of our non-U.S. subsidiaries has also been pledged as collateral. The ABL Facility contains customary operating covenants and certain restrictions including, among other things, the incurrence of additional debt, liens, dividends, asset sales, investments, mergers, acquisitions, affiliate transactions, stock repurchases and other restricted payments. The ABL Facility also requires compliance with a fixed charge coverage ratio if availability under the ABL Facility falls below $25.0 million. In addition, the ABL Facility contains customary events of default, including, without limitation, a failure to make payments under the facility, acceleration of more than $25.0 million of other indebtedness, certain bankruptcy events and certain change of control events.

Other Debt. Our foreign subsidiaries in Italy and India, maintain local credit arrangements consisting of lines of credit which are renewed on an annual basis. In December 2016, we terminated our revolving line of credit in Brazil and repaid the outstanding balance. We utilize local financing arrangements in our foreign operations in order to provide short-term local liquidity needs. Advances under these short-term credit arrangements are typically based on a percentage of the subsidiary’s accounts receivable or firm contracts with certain customers. Total outstanding balances under these arrangements and other domestic financing arrangements were $0.4 million and $7.4 million at December 31, 2016 and 2015, respectively.

At December 31, 2016, we had letters of credit issued and outstanding which totaled $5.9 million that are collateralized by $6.5 million in restricted cash. Additionally, our foreign operations had $11.3 million outstanding in letters of credit and other guarantees, primarily issued under the line of credit in Italy as well as certain letters of credit that are collateralized by $0.9 million in restricted cash. At December 31, 2016 and December 31, 2015, total restricted cash of $7.4 million and $17.5 million, respectively, was included in other current assets in the accompanying balance sheet.

We incurred net interest expense of $9.9 million, $9.1 million and $10.4 million for the years ended December 31, 2016, 2015 and 2014, respectively. Capitalized interest was $0.9 million, $1.1 million and $0.8 million for the years ended December 31, 2016, 2015 and 2014 respectively. Scheduled repayment of long-term debt as of December 31, 2016 is $100.0 million in 2021.

Fair Value of Financial Instruments and Concentrations of Credit Risk

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments and Concentrations of Credit Risk

Fair Value of Financial Instruments

Our financial instruments include cash and cash equivalents, receivables, payables and debt. We believe the carrying values of these instruments, with the exception of our Convertible Notes due 2017 and our Convertible Notes due 2021, approximated their fair values at December 31, 2016 and December 31, 2015. The estimated fair value of our Convertible Notes due 2017 was $84.4 million at December 31, 2016 and $154.4 million at December 31, 2015, and the estimated fair value of our Convertible Notes due 2021 was $110.5 million at December 31, 2016, based on quoted market prices at these respective dates.

Concentrations of Credit Risk

Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash, trade accounts and notes receivable. At December 31, 2016, substantially all of our cash deposits are held in accounts at numerous financial institutions across the various regions that we operate in. A majority of the cash is held in accounts that maintain deposit ratings of P-1 by Moody’s, A-1 by Standard and Poor’s, and F1 by Fitch. As part of our investment strategy, we perform periodic evaluations of the relative credit standing of these financial institutions.

Accounts Receivable

Accounts receivable at December 31, 2016 and 2015 include the following:



(In thousands)	2016			2015
Gross trade receivables	$	162,569		$	159,119
Allowance for doubtful accounts	(8,849		)	(7,189		)
Net trade receivables	153,720			151,930
Income tax receivables	39,944			32,600
Other receivables	20,643			21,834
Total receivables, net	$	214,307		$	206,364

At December 31, 2016, income tax receivables includes approximately $38.0 million related to our decision to amend prior U.S. federal income tax returns and request a refund for the carryback of U.S. federal tax losses incurred in 2016. At December 31, 2015, income tax receivables included approximately $29.0 million related to the refund for the carryback of U.S. federal tax losses incurred in 2015, which were substantially received in 2016.

Other receivables includes $11.5 million and $10.4 million for value added, goods and service taxes related to foreign jurisdictions as of December 31, 2016 and 2015, respectively. In addition, other receivables includes $8.0 million at December 31, 2016 and 2015 in connection with the March 2014 sale of the Environmental Services business that is held in escrow associated with transaction representations, warranties and indemnities. In December 2014, the buyer made certain claims for indemnification under the terms of the sale agreement, which defers the release of the escrow funds until such claims are resolved. Further discussion of the buyer’s claims and related litigation is contained in Note 15 below.

We derive a significant portion of our revenues from companies in the E&P industry, and our customer base is highly concentrated in mid-sized and international oil companies as well as government-owned or government-controlled oil companies operating in the markets that we serve. For 2016, 2015 and 2014, revenues from our 20 largest customers represented approximately 53%, 49% and 40%, respectively, of our consolidated revenues from continuing operations. For 2016, revenue from Sonatrach, our primary customer in Algeria, represented approximately 14% of consolidated revenues, and as of December 31, 2016, receivables from Sonatrach were approximately 14% of net trade receivables. For 2015 and 2014, no single customer accounted for more than 10% of our consolidated revenues.

We maintain an allowance for doubtful accounts based upon the expected collectability of accounts receivable. Changes in this allowance for 2016, 2015 and 2014 related to continuing operations, was as follows:



(In thousands)	2016			2015			2014
Balance at beginning of year	$	7,189		$	5,458		$	4,142
Provision for uncollectible accounts	2,416			1,886			1,246
Write-offs, net of recoveries	(756		)	(155		)	70
Balance at end of year	$	8,849		$	7,189		$	5,458

The Consolidated Statements of Cash Flows also includes an insignificant provision for uncollectible accounts in 2014 related to the Environmental Services business that is classified as discontinued operations.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Income Taxes

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Income Taxes

The provision (benefit) for income taxes related to continuing operations was as follows:



	Year Ended December 31,
(In thousands)	2016			2015			2014
Current:
U.S. Federal	$	(37,854	)	$	(32,272	)	$	17,086
State	20			(34		)	2,170
Foreign	10,440			11,411			9,925
Total current	(27,394		)	(20,895		)	29,181
Deferred:
U.S. Federal	2,670			(2,624		)	12,237
State	(181		)	179			(174		)
Foreign	863			1,942			(196		)
Total deferred	3,352			(503		)	11,867
Total income tax expense (benefit)	$	(24,042	)	$	(21,398	)	$	41,048

The total provision (benefit) was allocated to the following components of income (loss):



	Year Ended December 31,
(In thousands)	2016			2015			2014
Income (loss) from continuing operations	$	(24,042	)	$	(21,398	)	$	41,048
Income from discontinued operations	—			—			12,475
Total provision (benefit)	$	(24,042	)	$	(21,398	)	$	53,523

Income (loss) from continuing operations before income taxes was as follows:



	Year Ended December 31,
(In thousands)	2016			2015			2014
U.S.	$	(76,805	)	$	(122,082	)	$	88,964
Foreign	12,051			9,856			31,093
Income (loss) from continuing operations before income taxes	$	(64,754	)	$	(112,226	)	$	120,057

The effective income tax rate is reconciled to the statutory federal income tax rate as follows:



	Year Ended December 31,
	2016		2015		2014
Income tax expense (benefit) at federal statutory rate	(35.0	%)	(35.0	%)	35.0	%
Nondeductible expenses	2.8	%	2.8	%	2.9	%
Worthless stock deduction - Brazil	(14.4	%)	—	%	—	%
Goodwill and other asset impairments	3.5	%	15.7	%	—	%
Manufacturing deduction	0.8	%	1.8	%	(1.9	%)
Different rates on earnings of foreign operations	(1.2	%)	(3.6	%)	(4.3	%)
Change in valuation allowance	6.9	%	2.8	%	2.1	%
Uncertain tax positions	—	%	(2.2	%)	0.6	%
State tax expense (benefit), net	(2.5	%)	(1.5	%)	1.0	%
Other items, net	2.0	%	0.1	%	(1.2	%)
Total income tax expense (benefit)	(37.1	%)	(19.1	%)	34.2	%

Our effective tax rate in 2016 includes a $9.3 million benefit associated with a worthless stock deduction and related impacts from restructuring the investment in our Brazilian subsidiary, partially offset by a $4.5 million charge for increases to the valuation allowance for certain deferred tax assets which may not be realized (primarily related to our Australian subsidiary and certain U.S. state net operating losses). Our effective tax rate for 2015 was primarily impacted by the impairment of non-deductible goodwill. In addition, the 2015 income tax provision also includes a $4.6 million charge for increases to the valuation allowance for certain deferred tax assets which may not be realized (primarily related to our Australian subsidiary and certain U.S. state net operating losses). These 2015 charges were partially offset by a $4.4 million benefit associated with the forgiveness of certain inter-company balances due from our Brazilian subsidiary and a $2.2 million benefit from the release of U.S. tax reserves, following the expiration of statutes of limitation.

Temporary differences and carryforwards which give rise to deferred tax assets and liabilities at December 31, 2016 and 2015 are as follows:



(In thousands)	2016			2015
Deferred tax assets:
Net operating losses	$	18,771		$	14,800
Capitalized inventory costs	12,378			6,717
Stock based compensation	6,955			6,460
Accruals not currently deductible	4,883			6,157
Unrealized foreign exchange losses, net	3,087			3,013
Foreign tax credits	3,269			2,558
Other	1,871			599
Total deferred tax assets	51,214			40,304
Valuation allowance	(21,847		)	(16,780		)
Total deferred tax assets, net of allowances	29,367			23,524
Deferred tax liabilities:
Accelerated depreciation and amortization	(43,225		)	(38,034		)
Original issue discount on Convertible Notes due 2021	(8,553		)	—
Tax on unremitted earnings	(8,555		)	(7,181		)
Other	(6,030		)	(2,856		)
Total deferred tax liabilities	(66,363		)	(48,071		)
Total net deferred tax liabilities	$	(36,996	)	$	(24,547	)

Non-current deferred tax assets	$	1,747		$	1,821
Non-current deferred tax liabilities	(38,743		)	(26,368		)
Net deferred tax liabilities	$	(36,996	)	$	(24,547	)

For state income tax purposes, we have net operating loss carryforwards (“NOLs”) of approximately $240.5 million available to reduce future state taxable income. These NOLs expire in varying amounts beginning in 2018 through 2030. Foreign NOLs of approximately $26.4 million are available to reduce future taxable income, some of which expire beginning in 2017.

The realization of our net deferred tax assets is dependent on our ability to generate taxable income in future periods. At December 31, 2016 and December 31, 2015, we have recorded a valuation allowance in the amount of $21.8 million and $16.8 million, respectively, primarily related to certain U.S. state and foreign NOL carryforwards, including Brazil and Australia, which may not be realized.

Unremitted foreign earnings permanently reinvested abroad upon which deferred income taxes have not been provided aggregated approximately $161.7 million and $142.8 million at December 31, 2016 and 2015, respectively. It is not practicable to determine the amount of federal income taxes, if any, that might become due if such earnings are repatriated. We have the ability and intent to leave these foreign earnings permanently reinvested abroad.

We file income tax returns in the United States and several non-U.S. jurisdictions and are subject to examination in the various jurisdictions in which we file. We are no longer subject to income tax examinations for U.S. federal and substantially all state jurisdictions for years prior to 2012 and for substantially all foreign jurisdictions for years prior to 2008. We are currently under examination by the United States federal tax authorities for tax years 2014 and 2015 and by the State of Texas for tax years 2012 through 2015. In addition, we are under examination by various tax authorities in other countries. We fully cooperate with all audits, but defend existing positions vigorously. These audits are in various stages of completion and certain foreign jurisdictions have challenged the amount of taxes due for certain tax periods. We evaluate the potential exposure associated with various filing positions and record a liability for tax contingencies as circumstances warrant. Although we believe all tax positions are reasonable and properly reported in accordance with applicable tax laws and regulations in effect during the periods involved, the final determination of tax audits and any related litigation could be materially different than that which is reflected in historical income tax provisions and tax contingency accruals.

A reconciliation of the beginning and ending provision for uncertain tax positions is as follows:



(In thousands)	2016			2015			2014
Balance at January 1	$	419		$	3,786		$	2,175
Additions (reductions) for tax positions of prior years	477			(95		)	1,604
Additions (reductions) for tax positions of current year	—			—			7
Reductions for settlements with tax authorities	—			(575		)	—
Reductions for lapse of statute of limitations	(231		)	(2,697		)	—
Balance at December 31	$	665		$	419		$	3,786

Approximately $0.5 million of unrecognized tax benefits at December 31, 2016, if recognized, would favorably impact the effective tax rate. In 2015, we recognized a $2.2 million benefit to the income tax provision relating to uncertain tax positions for which the applicable statutes of limitation expired.

We recognize accrued interest and penalties related to uncertain tax positions in operating expenses. We recognized an insignificant amount of interest and penalties in 2016 and approximately $0.1 million and $0.4 million during 2015 and 2014, respectively. We had approximately $0.1 million and $0.1 million accrued for interest and penalties at December 31, 2016 and 2015, respectively.

Capital Stock

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Capital Stock

Common stock

Changes in outstanding Common Stock were as follows:



(In thousands of shares)	2016	2015	2014
Outstanding, beginning of year	99,377	99,204	98,031
Shares issued for exercise of options	125	104	540
Shares issued for time vested restricted stock (net of forfeitures)	341	69	633
Outstanding, end of year	99,843	99,377	99,204

Outstanding shares of common stock include shares held as treasury stock totaling 15,162,050, 15,302,345 and 15,210,233 as of December 31, 2016, 2015 an 2014, respectively

Preferred stock

We are authorized to issue up to 1,000,000 shares of Preferred Stock, $0.01 par value. There was no outstanding shares of preferred stock at December 31, 2016, 2015 or 2014.

Treasury stock

During 2016, 2015 and 2014, we repurchased 234,901, 292,168 and 215,760 shares, respectively, for an aggregate price of $1.2 million, $2.3 million and $2.5 million, respectively, representing employee shares surrendered in lieu of taxes under vesting of employee stock awards. All of the shares repurchased are held as treasury stock.

During 2016, 2015 and 2014, we reissued 375,196, 200,056 and 155,650 shares of treasury stock pursuant to various stock plans, including our employee stock purchase plan and our 2014 Non-Employee Directors’ Restricted Stock Plan.

Repurchase program

Our Board of Directors has approved a repurchase program that authorizes us to purchase up to $100.0 million of our outstanding shares of common stock or outstanding Convertible Notes due 2017. The repurchase program has no specific term. We may repurchase shares or Convertible Notes due 2017 in the open market or as otherwise determined by management, subject to certain limitations under the ABL Facility and other factors. Repurchases are expected to be funded from operating cash flows and available cash on-hand. As part of the share repurchase program, our management has been authorized to establish trading plans under Rule 10b5-1 of the Securities Exchange Act of 1934.

There were no shares repurchased under the program during 2016 and 2015. In 2014, we repurchased 4,317,278 shares of our common stock under this program for an average price per share, including commissions, of $11.72. In February 2016, we repurchased $11.2 million of our Convertible Notes due 2017 in the open market for $9.2 million. This repurchase was made under the existing Board authorized repurchase program discussed above. As of December 31, 2016, we had $33.5 million of authorization remaining under the program. In addition, the Board separately authorized the repurchase of $78.1 million of Convertible Notes due 2017 in connection with the December 2016 issuance of $100.0 million of Convertible Notes due 2021.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

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+ Details

Earnings Per Share

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Earnings per Share

The following table presents the reconciliation of the numerator and denominator for calculating earnings per share from continuing operations:



	Year Ended December 31,
(In thousands, except per share data)	2016			2015			2014
Numerator
Basic - income (loss) from continuing operations	$	(40,712	)	$	(90,828	)	$	79,009
Assumed conversions of Convertible Notes due 2017	—			—			5,091
Diluted - adjusted income (loss) from continuing operations	$	(40,712	)	$	(90,828	)	$	84,100

Denominator
Basic - weighted average common shares outstanding	83,697			82,722			82,999
Dilutive effect of stock options and restricted stock awards	—			—			1,733
Dilutive effect of the Convertible Notes due 2017	—			—			15,682
Dilutive effect of Convertible Notes due 2021	—			—			—
Diluted - weighted average common shares outstanding	83,697			82,722			100,414

Net income (loss) from continuing operations per common share
Basic	$	(0.49	)	$	(1.10	)	$	0.95
Diluted	$	(0.49	)	$	(1.10	)	$	0.84

We excluded the following weighted-average potential common shares from the calculations of diluted net income (loss) per common share during the applicable periods because their inclusion would have been anti-dilutive:



	Year Ended December 31,
(In thousands)	2016	2015	2014
Stock options and restricted stock-based awards	7,482	3,884	788
Convertible Notes due 2017	14,295	15,682	—
Convertible Notes due 2021	—	—	—

The Convertible Notes due 2021 will not impact the calculation of diluted net income per common share unless the average price of our common stock, as calculated in accordance with the terms of the indenture governing the Convertible Notes due 2021, exceeds the conversion price of $9.33 per share. We have the option to pay cash, issue shares of common stock, or any combination thereof for the aggregate amount due upon conversion of the Convertible Notes due 2021 as further described in Note 6 above. If converted, we currently intend to settle the principal amount of the notes in cash and as a result, only the amounts payable in excess of the principal amount of the notes, if any, are assumed to be settled with shares of common stock for purposes of computing diluted net income.

Stock Based Compensation and Other Benefit Plans

12 Months Ended

Dec. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Based Compensation and Other Benefit Plans

The following describes stockholder approved plans utilized by the Company for the issuance of stock based awards.

2014 Non-Employee Directors’ Restricted Stock Plan

In May 2014, our stockholders approved the 2014 Non-Employee Directors’ Restricted Stock Plan (the “2014 Director Plan”) which authorizes grants of restricted stock to non-employee directors based on a pre-determined dollar amount on the date of each annual meeting of stockholders. The pre-determined dollar amount for determining the number of restricted shares granted is subject to change by the Board of Directors or its committee but is initially set at $150,000 for each non-employee director, except for the Chairman of the Board who will receive an annual grant of restricted shares equal to $170,000. Each restricted share granted to a non-employee director vests in full on the earlier of the day prior to the next annual meeting of stockholders following the grant date or the first anniversary of the grant. During 2016, non-employee directors received shares of restricted stock totaling 212,961 shares at a weighted average fair value on the date of grant of $4.32 per share.

The maximum number of shares of common stock issuable under the 2014 Director Plan is 1,000,000 leaving 602,972 shares available for grant as of December 31, 2016.

2015 Employee Equity Incentive Plan

In May 2015, our stockholders approved the 2015 Employee Equity Incentive Plan (“2015 Plan”), pursuant to which the Compensation Committee of our Board of Directors (“Compensation Committee”) may grant to key employees, including executive officers and other corporate and divisional officers, a variety of forms of equity-based compensation, including options to purchase shares of common stock, shares of restricted common stock, restricted stock units, stock appreciation rights, other stock-based awards, and performance-based awards. In May 2016, our stockholders approved an amendment to the 2015 Plan which increased the number of shares authorized for issuance under the Plan from 6,000,000 to 7,800,000 shares. Under the 2015 Plan, as amended, grants of stock options and stock appreciation rights will reduce the number of available shares on a 1.00 to 1.00 basis, while full value awards will reduce the number of available shares on a 1.78 to 1.00 basis. At December 31, 2016, 650,951 shares remained available for award under the 2015 Plan.

Prior to approval of the 2015 Plan, equity-based compensation was provided pursuant to the 2006 Equity Incentive Plan (“2006 Plan”). No additional grants of equity-based compensation may be granted under the 2006 Plan following approval of the 2015 Plan, however, unexpired options and other awards previously granted continue in effect in accordance with their terms until they vest or are otherwise exercised or expire.

The Compensation Committee approves the granting of all stock based compensation to employees, utilizing shares available under the 2015 Plan, as amended. Activity under each of these programs is described below.

Stock Options & Cash-Settled Stock Appreciation Rights

Stock options granted by the Compensation Committee are granted with a three year vesting period and a term of ten years. During 2016, 1,242,856 options were granted with an exercise price of each stock option granted equal to the fair market value on the date of grant.

The following table summarizes activity for our outstanding stock options for the year ended December 31, 2016:



	Shares		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding at beginning of period	3,887,833		$	7.96
Granted	1,242,856		4.32
Exercised	(125,017	)	5.80
Expired or canceled	(320,833	)	8.43
Outstanding at end of period	4,684,839		$	7.02	6.14	$	7,130,887

Vested or expected to vest at end of period	4,592,882		$	7.06	6.08	$	6,878,173
Options exercisable at end of period	2,910,115		$	7.67	4.40	$	3,235,311

We estimated the fair value of options granted on the date of grant using the Black-Scholes option-pricing model, with the following weighted average assumptions:



	Year Ended December 31,
	2016		2015		2014
Risk-free interest rate	1.38	%	1.57	%	1.53	%
Expected life of the option in years	5.22		5.22		5.22
Expected volatility	50.5	%	47.3	%	48.6	%
Dividend yield	—	%	—	%	—	%

The risk-free interest rate is based on the implied yield on a U.S. Treasury zero-coupon issue with a remaining term equal to the expected term of the option. The expected life of the option is based on observed historical patterns. The expected volatility is based on historical volatility of the price of our common stock. The dividend yield is based on the projected annual dividend payment per share divided by the stock price at the date of grant, which is zero because we have not paid dividends for several years and do not expect to pay dividends in the foreseeable future.

The following table summarizes information about the weighted-average exercise price and the weighted-average grant date fair value of stock options granted:



	Year Ended December 31,
	2016		2015		2014
Weighted-average exercise price of the stock on the date of grant	$	4.32	$	9.00	$	11.20
Weighted-average grant date fair value on the date of grant	$	1.97	$	3.91	$	4.97

All stock options granted for 2016, 2015 and 2014 reflected an exercise price equal to the market value of the stock on the date of grant.

The total intrinsic value of options exercised was $0.1 million, $0.3 million and $3.2 million for the years ended December 31, 2016, 2015 and 2014, while cash from option exercises totaled $0.7 million, $0.6 million and $3.4 million, respectively.

The following table summarizes activity for outstanding cash-settled stock appreciation rights for the year-ended December 31, 2016:



	Rights
Outstanding at beginning of period	103,133
Exercised	—
Expired or cancelled	(33,633	)
Outstanding at end of period	69,500

Exercisable at end of period	69,500

During 2016, there were no additional grants of cash-settled stock appreciation rights. All remaining cash-settled stock appreciation rights have a June 2018 expiration date, and if exercised, will ultimately be settled in cash for the difference between the market value of our outstanding shares at the date of exercise, and $7.89. As such, the projected cash settlement is adjusted each period based on the ending fair market value of the underlying stock. At December 31, 2016, the fair market value of each cash-settled stock appreciation right was $1.71, resulting in a liability of $0.1 million.

Total compensation cost recognized for stock options and cash-settled stock appreciation rights during the years ended December 31, 2016, 2015 and 2014 was $2.3 million, $2.6 million and $2.6 million, respectively. For the years ended December 31, 2016, 2015 and 2014, we recognized tax benefits resulting from the exercise of stock options totaling $0.1 million, $0.1 million and $1.0 million , respectively.

Performance-Based Restricted Stock Units

Performance-based restricted stock units were awarded to executive officers and will be settled in shares of common stock based on the relative ranking of our total shareholder return (“TSR”) as compared to the TSR of our designated peer group over a three year period. The ending TSR price is equal to the average closing price of our shares over the last 30-calendar days of the performance period as set forth in the following table:



	Year Ended December 31,
	2016		2015		2014
Number of performance-based restricted stock units issued, at target	230,790		136,881		110,497
Range of payout of shares for each executive	0% - 150%		0% - 150%		0% - 150%
Performance period begin date	June 1, 2016		June 1, 2015		June 1, 2014
Performance period end date	May 31, 2019		May 31, 2018		May 31, 2017
Estimated fair value at date of grant	$	5.18	$	10.06	$	12.55

We estimated the fair value of each performance-based restricted stock unit at the date of grant using the Monte Carlo valuation model, with the following weighted average assumptions:



	Year Ended December 31,
	2016			2015			2014
Risk-free interest rate	0.95		%	1.02		%	0.81		%
Average closing price⁽¹⁾	$	4.69		$	8.96		$	11.28
Expected volatility	46.9		%	38.4		%	44.5		%
Dividend yield	—		%	—		%	—		%


(1)	Average closing price of our shares over the 30-calendar days ending May 16, 2016, May 19, 2015 and May 16, 2014, respectively.

The following table summarizes activity for outstanding performance-based restricted stock units for the year-ended December 31, 2016:



Nonvested Performance-Based Restricted Stock Units	Shares		Weighted-Average Grant Date Fair Value
Outstanding at beginning of period	335,329		$	11.69
Granted	230,790		5.18
Vested	(58,072	)	13.11
Forfeited	(60,863	)	12.51
Outstanding at the end of period	447,184		$	8.06

Total compensation cost recognized for performance-based restricted stock units was $1.0 million, $1.1 million and $0.5 million for the years ended December 31, 2016, 2015 and 2014 respectively. During the year ended December 31, 2016, the total fair value of performance-based restricted stock units vested was $0.4 million.

Restricted Stock Awards and Units

Time-vested restricted stock awards and restricted stock units are periodically granted to key employees, including grants for employment inducements, as well as to members of our Board of Directors. Employee awards provide for vesting periods ranging from three to four years. Non-employee director grants vest in full on the earlier of the day prior to the next annual meeting of stockholders following the grant date or the first anniversary of the grant. Upon vesting of these grants, shares are issued to award recipients.

The following tables summarize the activity for our outstanding time-vested restricted stock awards and restricted stock units 2016.



Nonvested Restricted Stock Awards (Time-Vesting)	Shares		Weighted-Average Grant Date Fair Value
Nonvested at January 1, 2016	881,345		$	11.00
Granted	262,961		4.50
Vested	(449,342	)	10.50
Forfeited	(99,429	)	11.30
Nonvested at December 31, 2016	595,535		$	8.45



Nonvested Restricted Stock Units (Time-Vesting)	Shares		Weighted-Average Grant Date Fair Value
Nonvested at January 1, 2016	1,133,543		$	9.11
Granted	1,534,994		4.36
Vested	(332,043	)	9.30
Forfeited	(153,465	)	8.04
Nonvested at December 31, 2016	2,183,029		$	5.82

Total compensation cost recognized for restricted stock awards and restricted stock units was $8.6 million, $10.1 million and $8.6 million for the years ended December 31, 2016, 2015 and 2014, respectively. Total unrecognized compensation cost at December 31, 2016 related to restricted stock awards and restricted stock units is approximately $10.9 million which is expected to be recognized over the next 1.8 years. During the years ended December 31, 2016, 2015 and 2014, the total fair value of shares vested was $3.9 million, $8.1 million and $9.0 million, respectively.

For 2016, 2015 and 2014, we recognized tax benefits resulting from the vesting of restricted stock awards and units totaling $1.5 million, $2.0 million and $2.8 million, respectively.

Defined Contribution Plan

Substantially all of our U.S. employees are covered by a defined contribution plan (“401(k) Plan”). Employees may voluntarily contribute up to 50% of compensation, as defined in the 401(k) Plan. Participants’ contributions, up to 3% of compensation, are matched 100% by us, and the participants’ contributions, from 3% to 6% of compensation, are matched 50% by us. Under the 401(k) Plan, our cash contributions were $0.9 million, $3.2 million and $3.6 million in 2016, 2015 and 2014, respectively. In connection with the additional cost reduction programs implemented in response to the continued decline in activity in early 2016, we temporarily eliminated our 401(k) matching contribution beginning in March 2016.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

Segment and Related Information

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Segment and Related Information

Our Company consists of two reportable segments, which offer different products and services to a relatively homogenous customer base. The reportable segments include: Fluids Systems and Mats and Integrated Services. All intercompany revenues and related profits have been eliminated.

Fluids Systems — Our Fluids Systems business provides drilling fluids products and technical services to customers in the North America, EMEA, Latin America, and Asia Pacific regions. We offer customized solutions for highly technical drilling projects involving complex subsurface conditions, such as horizontal, directional, geologically deep or deep water drilling. These projects require increased monitoring and critical engineering support of the fluids system during the drilling process.

We also have industrial mineral grinding operations for barite, a critical raw material in drilling fluids products, which serve to support our activity in the North American drilling fluids market. We use the resulting products in our drilling fluids business, and also sell them to third party users, including other drilling fluids companies. We also sell a variety of other minerals, principally to third party industrial (non-oil and gas) markets.

Mats and Integrated Services — Our Mats and Integrated Services segment manufactures our DURA-BASE^® Advanced Composite Mats for use in our rental operations as well as for third party sales. Our mats provide environmental protection and ensure all-weather access to sites with unstable soil conditions. We provide mat rentals to customers in the E&P, electrical transmission & distribution, pipeline, solar, petrochemical and construction industries across the U.S., Canada and United Kingdom. We also offer location construction and related services to customers, primarily in the U.S. Gulf Coast region. In addition, we sell composite mats to customers outside of the U.S. and to domestic customers outside of the oil and gas exploration market.

Summarized financial information concerning our reportable segments is shown in the following tables:



	Year Ended December 31,
(In thousands)	2016			2015			2014

Revenues
Fluids systems	$	395,461		$	581,136		$	965,049
Mats and integrated services	76,035			95,729			153,367
Total revenues	$	471,496		$	676,865		$	1,118,416

Depreciation and amortization
Fluids systems	$	20,746		$	22,108		$	22,934
Mats and integrated Services	14,227			18,869			15,507
Corporate office	2,982			2,940			2,734
Total depreciation and amortization	$	37,955		$	43,917		$	41,175

Operating income (loss)
Fluids systems	$	(43,631	)	$	(86,770	)	$	95,600
Mats and integrated services	14,741			24,949			70,526
Corporate office	(28,323		)	(37,278		)	(35,530		)
Operating income (loss)	$	(57,213	)	$	(99,099	)	$	130,596

Segment Assets
Fluids Systems	$	522,488		$	549,827		$	778,148
Mats and Integrated Services	164,515			172,415			175,318
Corporate	111,180			126,651			54,206
Total Assets	$	798,183		$	848,893		$	1,007,672

Capital Expenditures
Fluids Systems	$	32,310		$	40,533		$	36,626
Mats and Integrated Services	4,637			27,456			64,101
Corporate	1,493			1,415			5,215
Total Capital Expenditures	$	38,440		$	69,404		$	105,942

The Consolidated Statements of Cash Flows include $0.9 million in depreciation and amortization expense and capital expenditures of $1.0 million for 2014 related to the Environmental Services business sold in 2014 that are classified as discontinued operations.

In response to the significant declines in industry activity in North America, we implemented cost reduction programs in 2015 including workforce reductions, reduced discretionary spending, and temporary salary freezes for substantially all employees, including executive officers. In September 2015, we also implemented a voluntary early retirement program with certain eligible employees in the United States. As a result of the further declines in activity in the first half of 2016, we implemented further cost reduction actions including additional workforce reductions and beginning in March 2016, a temporary salary reduction for a significant number of North American employees, including executive officers, suspension of the Company’s matching contribution to the U.S. defined contribution plan as well as a reduction in cash compensation paid to our Board of Directors in order to further align our cost structure to activity levels.

As part of these cost reduction programs, we reduced our North American employee base by 626 (approximately 48%) from the first quarter 2015 through the third quarter of 2016, including reductions of 436 employees in 2015 and 190 employees in the first nine months of 2016. As a result of these termination programs, we recognized charges for employee termination costs as shown in the table below:



	Year Ended December 31,
(In thousands)	2016		2015
Cost of revenues	$	3,647	$	5,664
Selling, general and administrative expenses	925		2,499
Total employee termination costs	$	4,572	$	8,163

Fluids systems	$	4,125	$	7,218
Mats and integrated services	285		717
Corporate office	162		228
Total employee termination costs	$	4,572	$	8,163

Accrued employee termination costs at December 31, 2016 and 2015 were $0.3 million and $3.3 million, respectively.

Our 2016 and 2015 operating losses include net charges of $14.8 million and $80.5 million, respectively, resulting from the reduction in value of certain assets, the wind-down of our operations in Uruguay and the resolution of certain wage and hour litigation claims. The Fluids Systems segment operating results included $15.5 million and $75.5 million of these charges in 2016 and 2015, respectively. The remaining $0.7 million benefit and $5.0 million charge was included in Corporate Office expenses in 2016 and 2015, respectively, related to the resolution of certain wage and hour litigation claims.

The $15.5 million of Fluids Systems charges in 2016 includes $6.9 million of non-cash impairments in the Asia Pacific region resulting from the continuing unfavorable industry market conditions and the deteriorating outlook for the region, $4.1 million of charges for the reduction in carrying values of certain inventory, primarily resulting from lower of cost or market adjustments and $4.5 million of charges in the Latin America region associated with the wind-down of our operations in Uruguay, including $0.5 million to write-down property, plant and equipment. The $6.9 million of impairments in the Asia Pacific region includes a $3.8 million charge to write-down property, plant and equipment to its estimated fair value and a $3.1 million charge to fully impair the customer related intangible assets in the region.

The $75.5 million of Fluids Systems charges in 2015 includes $70.7 million of non-cash charges for the impairment of goodwill, following our November 1, 2015 annual evaluation, a $2.6 million non-cash impairment of assets, following our decision to exit a facility, and a $2.2 million charge to reduce the carrying value of diesel-based drilling fluid inventory, resulting from lower of cost or market adjustments.

In 2016, a total of $6.7 million of these charges are reported in impairments and other charges with the remaining $8.1 million reported in cost of revenues including the $4.1 million of charges for the write-down of inventory and $4.0 million of the Uruguay exit costs. In 2015, a total of $78.3 million of these charges are reported in impairments and other charges with the remaining $2.2 million of charges for the write-down of inventory being reported in cost of revenues.

As described in Note 1, we revised our estimated useful lives and end of life residual values for composite mats included in our rental fleet as of January 1, 2016 resulting in a decrease in depreciation expense of approximately $6.1 million for the year ended December 31, 2016.

The following table sets forth geographic information for our operations. Revenues by geographic location are determined based on the operating location from which services are rendered or products are sold. Long-lived assets include property, plant and equipment and other long-term assets based on the country in which the assets are located.



	Year Ended December 31,
(In thousands)	2016		2015		2014

Revenue
United States	$	214,026	$	384,147	$	748,845
Canada	34,176		52,851		79,516
Algeria	80,936		65,272		58,417
All Other EMEA	96,654		109,252		118,827
Latin America	41,035		47,240		85,244
Asia Pacific	4,669		18,103		27,567
Total Revenue	$	471,496	$	676,865	$	1,118,416

Long-Lived Assets
United States	$	274,746	$	275,109	$	294,762
Canada	3,922		552		10,044
EMEA	48,047		50,759		55,560
Latin America	4,842		4,543		6,635
Asia Pacific	1,939		9,731		25,991
Total Long-Lived Assets	$	333,496	$	340,694	$	392,992

For 2016, revenue from Sonatrach, our primary customer in Algeria, was approximately 14% of consolidated revenues. For 2015 and 2014, no single customer accounted for more than 10% of our consolidated revenues.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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+ Details

Supplemental Cash Flow and Other Information

12 Months Ended

Dec. 31, 2016

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow and Other Information

Accounts payable and accrued liabilities at December 31, 2016, 2015, and 2014, included accruals for capital expenditures of $2.0 million, $3.9 million, and $1.2 million, respectively.

Accrued liabilities at December 31, 2016 and 2015 were $31.2 million and $45.8 million, respectively. The balance at December 31, 2016 and December 31, 2015 included $11.9 million and $15.1 million, respectively, for employee incentives and other compensation related expenses.

Impairments and other non-cash charges in the consolidated statements of cash flows included the following:



	Year Ended December 31,
(In thousands)	2016		2015
Goodwill and other intangible asset impairments	$	3,104	$	70,720
Property, plant and equipment impairments	4,286		2,625
Inventory write-downs	4,075		2,163
Write-off of debt issuance costs on termination of Credit Agreement	1,058		—
Impairments and other non-cash charges in the Consolidated Statements of Cash Flows	$	12,523	$	75,508

Discontinued Operations

12 Months Ended

Dec. 31, 2016

Discontinued Operations and Disposal Groups [Abstract]

Discontinued Operations

In March of 2014 we completed the sale of the Environmental Services business for $100 million in cash, subject to adjustment based on actual working capital conveyed at closing. Cash proceeds from the sale were $89.8 million in 2014, net of transaction related expenses, including the adjustment related to final working capital conveyed at closing. The agreement significantly limits our post-closing environmental obligations, including those related to the waste transfer and disposal facilities. In addition, $8.0 million of the sales price was withheld in escrow associated with transaction representations, warranties and indemnities, with $4.0 million scheduled to be released at each of the nine-month and 18-month anniversary of the closing. In December 2014, the buyer made certain claims for indemnification under the terms of the agreement, which defers the release of the escrow funds until such claims are resolved. Further discussion of the buyer’s claims and related litigation is contained in Note 15. As a result of the sale transaction, we recorded a gain on the disposal of the business of $34.0 million ($22.1 million after-tax) in the first quarter of 2014. The results of operations for this business have been classified as discontinued operations for all periods presented.

Summarized results of operations from discontinued operations are as follows:



(In thousands)	2014
Revenues	$	11,744
Income from discontinued operations before income taxes	1,770
Income from discontinued operations, net of tax	1,152
Gain from disposal of discontinued operations before income taxes	33,974
Gain from disposal of discontinued operations, net of tax	22,117

- Definition

The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

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+ Details

Commitments and Contingencies

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

In the ordinary course of conducting our business, we become involved in litigation and other claims from private party actions, as well as judicial and administrative proceedings involving governmental authorities at the federal, state and local levels.

Wage and Hour Litigation

During the second quarter of 2014, a lawsuit was filed by Jesse Davida, a former employee, in Federal Court in Texas against Newpark Drilling Fluids LLC, alleging violations of the Fair Labor Standards Act (“FLSA”). The plaintiff sought damages and penalties for our alleged failure to properly classify our field service employees as “non-exempt” under the FLSA and pay them on an hourly basis (including overtime). The Court conditionally certified a class of plaintiffs as those working as fluid service technicians for Newpark Drilling Fluids for the prior three years. A second case was filed by Josh Christensen in the fourth quarter of 2014 in Federal Court in Texas alleging that individuals treated as independent contractors should have been classified as employees and, as such, were entitled to assert claims for alleged violations of the FLSA (similar to the claims asserted in the Davida matter). Five additional plaintiffs joined this litigation after it was filed. In March of 2015, the Court denied the plaintiffs’ motion for conditional class certification. Counsel for the plaintiffs did not appeal that ruling and subsequently filed individual cases for each of the original opt-in plaintiffs plus two new plaintiffs, leaving a total of eight independent contractor cases.

In the fourth quarter of 2015, the same counsel representing the plaintiff’s in the Davida and Christiansen-related cases filed two additional individual FLSA cases on behalf of former fluid service technician employees. These cases are similar in nature to the Davida case discussed above.

Beginning in November 2015, we engaged in settlement discussions with counsel for the plaintiffs in the pending wage and hour litigation cases described above. Following mediation in January 2016, the parties executed a settlement agreement in April 2016 to resolve all of the pending matters, subject to a number of conditions, including approval by the Court in the Davida case, and the dismissal of the other FLSA cases (Christiansen-related lawsuits and individual FLSA cases). As a result of the then ongoing settlement negotiations, we recognized a $5.0 million charge in the fourth quarter of 2015 related to the resolution of these wage and hour litigation claims. The settlement agreement was approved by the Davida Court on August 19, 2016. Approximately 569 current and former fluid service technician employees eligible for the settlement were notified of the pending resolution beginning on August 26, 2016 and given an opportunity to participate in the settlement. The amount paid to any eligible individual varied based on a formula that takes into account the number of workweeks and salary for the individual during the time period covered by the settlement. Any eligible individual that elected to participate in the settlement released all wage and hour claims against us.

The deadline for submitting claims or opting out was October 25, 2016 with 379 individuals filing claims and no individuals opting out. The percentage of current or former fluid service technicians that elected to participate in the settlement represented approximately 67% of the individuals receiving notice. Individuals that did not participate in the settlement may retain the right to file an individual lawsuit against us, subject to any defenses we may assert. As a result of the settlement agreement, we paid $4.5 million into a settlement fund in the second half of 2016. The settlement fund was administered by a third party who made payments to eligible individuals that elected to participate in accordance with a formula incorporated into the settlement agreement. In addition, under the terms of settlement agreement, settlement funds that remained after all payments were made to eligible individuals that elected to participate in the settlement were shared by the participating individuals and us. In the fourth quarter of 2016, we recognized a $0.7 million gain associated with the change in final settlement amount of these wage and hour litigation claims.

Escrow Claims Related to Sale of Environmental Services Business

Under the terms of the March 2014 sale of the Environmental Services business to Ecoserv, LLC (“Ecoserv”), $8 million of the sales price was withheld and placed in an escrow account to satisfy claims for possible breaches of representations and warranties contained in the sale agreement. For the amount withheld in escrow, $4.0 million was scheduled for release to Newpark at each of the nine-month and 18-month anniversary of the closing. In December 2014, we received a letter from counsel for Ecoserv asserting that we had breached certain representations and warranties contained in the sale agreement including failing to disclose service work performed on injection wells and increased barge rental costs. The letter indicated that Ecoserv expected the costs associated with these claims to exceed the escrow amount. Following a further exchange of letters, in July of 2015, we filed a declaratory judgment action against Ecoserv in state court in Harris County, Texas, seeking release of the escrow funds. Thereafter, Ecoserv filed a counterclaim seeking recovery of the escrow funds based on the alleged breach of representations and warranties. Ecoserv also alleges that we committed fraud in connection with the sale transaction. We believe there is no basis in the agreement or on the facts to support the claims asserted by Ecoserv and intend to vigorously defend our position while pursuing release of the entire $8.0 million in escrow. The litigation remains in the discovery process with mediation currently scheduled in March of 2017.

Leases

We lease various manufacturing facilities, warehouses, office space, machinery and equipment under operating leases with remaining terms ranging from one to ten years with various renewal options. Substantially all leases require payment of taxes, insurance and maintenance costs in addition to rental payments. Total rental expenses for all operating leases were approximately $21.0 million, $22.6 million and $25.5 million in 2016, 2015 and 2014, respectively.

Future minimum payments under non-cancelable operating leases, with initial or remaining terms in excess of one year are included in the table below. Future minimum payments under capital leases are not significant.



(In thousands)
2017	$	9,310
2018	6,128
2019	4,724
2020	3,805
2021	3,342
Thereafter	9,780
	$	37,089

Other

In conjunction with our insurance programs, we had established letters of credit in favor of certain insurance companies in the amount of $3.0 million and $3.3 million at December 31, 2016 and 2015, respectively. We also had $0.4 million and $0.4 million in guarantee obligations in connection with facility closure bonds and other performance bonds issued by insurance companies outstanding as of December 31, 2016 and 2015, respectively.

Other than normal operating leases for office and warehouse space, rolling stock and other pieces of operating equipment, we do not have any off-balance sheet financing arrangements or special purpose entities. As such, we are not materially exposed to any financing, liquidity, market or credit risk that could arise if we had engaged in such financing arrangements.

We are self-insured for health claims, subject to certain “stop loss” insurance policies. Claims in excess of $250,000 per incident are insured by third-party insurers. We had accrued liabilities of $0.8 million and $1.0 million for unpaid claims incurred, based on historical experience at December 31, 2016 and 2015, respectively. Substantially all of these estimated claims are expected to be paid within six months of their occurrence.

We are self-insured for certain workers’ compensation, auto and general liability claims up to a certain policy limit. Claims in excess of $750,000 are insured by third-party reinsurers. At December 31, 2016 and 2015, we had accrued liabilities of $1.9 million and $2.5 million, respectively, for the uninsured portion of claims.

We maintain accrued liabilities for asset retirement obligations, which represent obligations associated with the retirement of tangible long-lived assets that result from the normal operation of the long-lived asset. Our asset retirement obligations primarily relate to required expenditures associated with owned and leased facilities. Upon settlement of the liability, a gain or loss for any difference between the settlement amount and the liability recorded is recognized. As of December 31, 2016 and 2015, we had accrued asset retirement obligations of $1.0 million and $0.8 million, respectively.

Supplemental Selected Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Supplemental Selected Quarterly Financial Data (Unaudited)



(In thousands, except per share amounts)	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Fiscal Year 2016
Revenues	$	114,544		$	115,315		$	104,554		$	137,083
Operating loss	(18,825		)	(15,135		)	(15,055		)	(8,198		)
Net loss	(13,300		)	(13,904		)	(13,451		)	(57		)

Net loss per common share
Basic	$	(0.16	)	$	(0.17	)	$	(0.16	)	$	—
Diluted	$	(0.16	)	$	(0.17	)	$	(0.16	)	$	—

Fiscal Year 2015
Revenues	$	208,464		$	163,644		$	154,170		$	150,587
Operating income (loss)	6,128			(1,682		)	(9,263		)	(94,282		)
Net income (loss)	993			(4,254		)	(4,471		)	(83,096		)

Net income (loss) per common share
Basic	$	0.01		$	(0.05	)	$	(0.05	)	$	(1.00	)
Diluted	$	0.01		$	(0.05	)	$	(0.05	)	$	(1.00	)

Fourth quarter 2016 operating loss includes a $2.6 million non-cash charge to reduce the carrying value of drilling fluids inventory in our Asia Pacific region. Fourth quarter 2016 and third quarter 2016 operating loss includes charges of $2.0 million and $2.5 million, respectively, associated primarily with asset redeployment costs resulting from the exit of our Fluids Systems operations in Uruguay. Second quarter 2016 operating loss includes a total of $6.9 million of impairments and other charges related to our Asia Pacific region, including a $3.8 million non-cash impairment to write-down property, plant and equipment to its estimated fair value and a $3.1 million impairment of customer related intangible assets.

Fourth quarter 2015 operating loss includes a total of $80.5 million of charges for the reduction in value of certain assets and the resolution of the wage and hour litigation claims. These charges include a $70.7 million non-cash impairment of goodwill, a $2.6 million non-cash impairment of assets following our decision to exit a facility, a $2.2 million charge to reduce the carrying value of diesel-based drilling fluid inventory, and a $5.0 million charge for the resolution of certain wage and hour litigation claims.

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Organization and Principles of Consolidation

Use of Estimates and Market Risks and Change in Accounting Estimates

Cash Equivalents

Cash Equivalents. All highly liquid investments with a remaining maturity of three months or less at the date of acquisition are classified as cash equivalents.

Restricted Cash

Restricted Cash. Cash that is restricted as to withdrawal or usage is recognized as restricted cash and is included in other current assets in the accompanying balance sheet.

Allowance for Doubtful Accounts

Allowance for Product Returns

Inventories

Property, Plant and Equipment



Computer hardware and office equipment		3-5 years
Computer software		3-10 years
Autos & light trucks		5-7 years
Furniture, fixtures & trailers		7-10 years
Composite mats (rental fleet)		10-12 years
Machinery and heavy equipment		5-15 years
Owned buildings		20-39 years
Leasehold improvements	Lease term, including reasonably assured renewal periods

Goodwill and Other Intangible Assets

Impairment of Long-Lived Assets

Insurance

Treasury Stock

Treasury Stock. Treasury stock is carried at cost, which includes the entire cost of the acquired stock.

Revenue Recognition

Shipping and handling costs are reflected in cost of revenues, and all reimbursements by customers of shipping and handling costs are included in revenues.

Income Taxes

Share-Based Compensation

Foreign Currency Translation

Fair Value Measurement


•	Level 1: The use of quoted prices in active markets for identical financial instruments.


•	Level 2: The use of quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active or other inputs that are observable in the market or can be corroborated by observable market data.


•	Level 3: The use of significantly unobservable inputs that typically require the use of management's estimates of assumptions that market participants would use in pricing.

Derivative Financial Instruments

New Accounting Pronouncements

Standard adopted in 2016

Standards not yet adopted

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Schedule of useful life for property, plant and equipment



Computer hardware and office equipment		3-5 years
Computer software		3-10 years
Autos & light trucks		5-7 years
Furniture, fixtures & trailers		7-10 years
Composite mats (rental fleet)		10-12 years
Machinery and heavy equipment		5-15 years
Owned buildings		20-39 years
Leasehold improvements	Lease term, including reasonably assured renewal periods

Inventories (Tables)

12 Months Ended

Dec. 31, 2016

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consisted of the following items at December 31:



(In thousands)	2016		2015
Raw materials:
Drilling fluids	$	115,399	$	133,934
Mats	1,137		657
Total raw materials	116,536		134,591
Blended drilling fluids components	23,762		25,343
Finished goods - mats	3,314		3,723
Total inventories	$	143,612	$	163,657

Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, plant and equipment



(In thousands)	2016			2015
Land	$	11,505		$	11,613
Buildings and improvements	121,967			122,514
Machinery and equipment	248,229			224,974
Computer hardware and software	30,544			29,688
Furniture and fixtures	5,829			5,788
Construction in progress	19,417			20,950
	437,491			415,527
Less accumulated depreciation	(186,700		)	(164,818		)
	250,791			250,709

Composite mats (rental fleet)	100,543			100,341
Less accumulated depreciation - composite mats	(47,680		)	(43,418		)
	52,863			56,923

Property, plant and equipment, net	$	303,654		$	307,632

Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill

Changes in the carrying amount of goodwill by reportable segment are as follows:



(In thousands)	Fluids Systems			Mats and Integrated Services			Total
Balance at December 31, 2014	$	72,684		$	19,209		$	91,893
Impairment	(70,720		)	—			(70,720		)
Effects of foreign currency	(1,964		)	(200		)	(2,164		)
Balance at December 31, 2015	—			19,009			19,009
Acquisition	1,720			—			1,720
Effects of foreign currency	(54		)	(680		)	(734		)
Balance at December 31, 2016	1,666			18,329			19,995

Other intangible assets

Other intangible assets consist of the following:



	December 31, 2016							December 31, 2015
(In thousands)	Gross Carrying Amount		Accumulated Amortization			Other intangible assets, net		Gross Carrying Amount		Accumulated Amortization			Other intangible assets, net
Technology related	$	5,766	$	(3,873	)	$	1,893	$	5,077	$	(3,600	)	$	1,477
Customer related	25,158		(21,962		)	3,196		28,069		(19,638		)	8,431
Employment related	1,848		(1,346		)	502		1,625		(975		)	650
Total amortizing intangible assets	32,772		(27,181		)	5,591		34,771		(24,213		)	10,558

Permits and licenses	476		—			476		493		—			493
Total indefinite-lived intangible assets	476		—			476		493		—			493
Total intangible assets	$	33,248	$	(27,181	)	$	6,067	$	35,264	$	(24,213	)	$	11,051

Estimated future amortization expense

Estimated future amortization expense for the years ended December 31 is as follows:



(In thousands)	2017		2018		2019		2020		2021		Thereafter		Total
Technology related	$	339	$	339	$	339	$	310	$	259	$	307	$	1,893
Customer related	1,632		584		419		313		184		64		3,196
Employment related	437		65		—		—		—		—		502
Total future amortization expense	$	2,408	$	988	$	758	$	623	$	443	$	371	$	5,591

Financing Arrangements (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Schedule of financing arrangements

Financing arrangements consisted of the following at December 31, 2016 and 2015:



(In thousands)	December 31, 2016									December 31, 2015
	Principal Amount			Unamortized Discount and Debt Issuance Costs			Total Debt			Principal Amount			Unamortized Discount and Debt Issuance Costs			Total Debt
Convertible Notes due 2017	$	83,256		$	(268	)	$	82,988		$	172,497		$	(1,296	)	$	171,201
Convertible Notes due 2021	100,000			(27,100		)	72,900			—			—			—
Revolving credit facility	—			—			—			—			—			—
ABL Facility	—			—			—			—			—			—
Other debt	380			—			380			7,392			—			7,392
Total debt	183,636			(27,368		)	156,268			179,889			(1,296		)	178,593
Less: current portion	(83,636		)	268			(83,368		)	(7,382		)	—			(7,382		)
Long-term debt	$	100,000		$	(27,100	)	$	72,900		$	172,507		$	(1,296	)	$	171,211

Fair Value of Financial Instruments and Concentrations of Credit Risk (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Schedule of accounts receivable

Accounts receivable at December 31, 2016 and 2015 include the following:



(In thousands)	2016			2015
Gross trade receivables	$	162,569		$	159,119
Allowance for doubtful accounts	(8,849		)	(7,189		)
Net trade receivables	153,720			151,930
Income tax receivables	39,944			32,600
Other receivables	20,643			21,834
Total receivables, net	$	214,307		$	206,364

Schedule of allowance for doubtful accounts

Changes in this allowance for 2016, 2015 and 2014 related to continuing operations, was as follows:



(In thousands)	2016			2015			2014
Balance at beginning of year	$	7,189		$	5,458		$	4,142
Provision for uncollectible accounts	2,416			1,886			1,246
Write-offs, net of recoveries	(756		)	(155		)	70
Balance at end of year	$	8,849		$	7,189		$	5,458

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Provision (benefit) for income taxes

The provision (benefit) for income taxes related to continuing operations was as follows:



	Year Ended December 31,
(In thousands)	2016			2015			2014
Current:
U.S. Federal	$	(37,854	)	$	(32,272	)	$	17,086
State	20			(34		)	2,170
Foreign	10,440			11,411			9,925
Total current	(27,394		)	(20,895		)	29,181
Deferred:
U.S. Federal	2,670			(2,624		)	12,237
State	(181		)	179			(174		)
Foreign	863			1,942			(196		)
Total deferred	3,352			(503		)	11,867
Total income tax expense (benefit)	$	(24,042	)	$	(21,398	)	$	41,048

The total provision (benefit) was allocated to the following components of income (loss):



	Year Ended December 31,
(In thousands)	2016			2015			2014
Income (loss) from continuing operations	$	(24,042	)	$	(21,398	)	$	41,048
Income from discontinued operations	—			—			12,475
Total provision (benefit)	$	(24,042	)	$	(21,398	)	$	53,523

Income (loss) from continuing operations before income taxes

Income (loss) from continuing operations before income taxes was as follows:



	Year Ended December 31,
(In thousands)	2016			2015			2014
U.S.	$	(76,805	)	$	(122,082	)	$	88,964
Foreign	12,051			9,856			31,093
Income (loss) from continuing operations before income taxes	$	(64,754	)	$	(112,226	)	$	120,057

Effective income tax rate

The effective income tax rate is reconciled to the statutory federal income tax rate as follows:



	Year Ended December 31,
	2016		2015		2014
Income tax expense (benefit) at federal statutory rate	(35.0	%)	(35.0	%)	35.0	%
Nondeductible expenses	2.8	%	2.8	%	2.9	%
Worthless stock deduction - Brazil	(14.4	%)	—	%	—	%
Goodwill and other asset impairments	3.5	%	15.7	%	—	%
Manufacturing deduction	0.8	%	1.8	%	(1.9	%)
Different rates on earnings of foreign operations	(1.2	%)	(3.6	%)	(4.3	%)
Change in valuation allowance	6.9	%	2.8	%	2.1	%
Uncertain tax positions	—	%	(2.2	%)	0.6	%
State tax expense (benefit), net	(2.5	%)	(1.5	%)	1.0	%
Other items, net	2.0	%	0.1	%	(1.2	%)
Total income tax expense (benefit)	(37.1	%)	(19.1	%)	34.2	%

Schedule of deferred tax assets and liabilities

Temporary differences and carryforwards which give rise to deferred tax assets and liabilities at December 31, 2016 and 2015 are as follows:



(In thousands)	2016			2015
Deferred tax assets:
Net operating losses	$	18,771		$	14,800
Capitalized inventory costs	12,378			6,717
Stock based compensation	6,955			6,460
Accruals not currently deductible	4,883			6,157
Unrealized foreign exchange losses, net	3,087			3,013
Foreign tax credits	3,269			2,558
Other	1,871			599
Total deferred tax assets	51,214			40,304
Valuation allowance	(21,847		)	(16,780		)
Total deferred tax assets, net of allowances	29,367			23,524
Deferred tax liabilities:
Accelerated depreciation and amortization	(43,225		)	(38,034		)
Original issue discount on Convertible Notes due 2021	(8,553		)	—
Tax on unremitted earnings	(8,555		)	(7,181		)
Other	(6,030		)	(2,856		)
Total deferred tax liabilities	(66,363		)	(48,071		)
Total net deferred tax liabilities	$	(36,996	)	$	(24,547	)

Non-current deferred tax assets	$	1,747		$	1,821
Non-current deferred tax liabilities	(38,743		)	(26,368		)
Net deferred tax liabilities	$	(36,996	)	$	(24,547	)

Income tax contingencies

A reconciliation of the beginning and ending provision for uncertain tax positions is as follows:



(In thousands)	2016			2015			2014
Balance at January 1	$	419		$	3,786		$	2,175
Additions (reductions) for tax positions of prior years	477			(95		)	1,604
Additions (reductions) for tax positions of current year	—			—			7
Reductions for settlements with tax authorities	—			(575		)	—
Reductions for lapse of statute of limitations	(231		)	(2,697		)	—
Balance at December 31	$	665		$	419		$	3,786

Capital Stock (Tables)

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Schedule of changes in outstanding Common Stock

Changes in outstanding Common Stock were as follows:



(In thousands of shares)	2016	2015	2014
Outstanding, beginning of year	99,377	99,204	98,031
Shares issued for exercise of options	125	104	540
Shares issued for time vested restricted stock (net of forfeitures)	341	69	633
Outstanding, end of year	99,843	99,377	99,204

Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Schedule of earnings per share, basic and diluted

The following table presents the reconciliation of the numerator and denominator for calculating earnings per share from continuing operations:



	Year Ended December 31,
(In thousands, except per share data)	2016			2015			2014
Numerator
Basic - income (loss) from continuing operations	$	(40,712	)	$	(90,828	)	$	79,009
Assumed conversions of Convertible Notes due 2017	—			—			5,091
Diluted - adjusted income (loss) from continuing operations	$	(40,712	)	$	(90,828	)	$	84,100

Denominator
Basic - weighted average common shares outstanding	83,697			82,722			82,999
Dilutive effect of stock options and restricted stock awards	—			—			1,733
Dilutive effect of the Convertible Notes due 2017	—			—			15,682
Dilutive effect of Convertible Notes due 2021	—			—			—
Diluted - weighted average common shares outstanding	83,697			82,722			100,414

Net income (loss) from continuing operations per common share
Basic	$	(0.49	)	$	(1.10	)	$	0.95
Diluted	$	(0.49	)	$	(1.10	)	$	0.84

Stock Based Compensation and Other Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2016

Restricted Stock Units (RSUs) [Member]

Notes Tables

Weighted-average exercise price and grant date fair value of stock options

We estimated the fair value of each performance-based restricted stock unit at the date of grant using the Monte Carlo valuation model, with the following weighted average assumptions:



	Year Ended December 31,
	2016			2015			2014
Risk-free interest rate	0.95		%	1.02		%	0.81		%
Average closing price⁽¹⁾	$	4.69		$	8.96		$	11.28
Expected volatility	46.9		%	38.4		%	44.5		%
Dividend yield	—		%	—		%	—		%


(1)	Average closing price of our shares over the 30-calendar days ending May 16, 2016, May 19, 2015 and May 16, 2014, respectively

Employee Stock Option [Member]

Notes Tables

Schedule of activity for stock options outstanding

The following table summarizes activity for our outstanding stock options for the year ended December 31, 2016:



	Shares		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding at beginning of period	3,887,833		$	7.96
Granted	1,242,856		4.32
Exercised	(125,017	)	5.80
Expired or canceled	(320,833	)	8.43
Outstanding at end of period	4,684,839		$	7.02	6.14	$	7,130,887

Vested or expected to vest at end of period	4,592,882		$	7.06	6.08	$	6,878,173
Options exercisable at end of period	2,910,115		$	7.67	4.40	$	3,235,311

Schedule of weighted average assumptions for fair value of options granted

We estimated the fair value of options granted on the date of grant using the Black-Scholes option-pricing model, with the following weighted average assumptions:



	Year Ended December 31,
	2016		2015		2014
Risk-free interest rate	1.38	%	1.57	%	1.53	%
Expected life of the option in years	5.22		5.22		5.22
Expected volatility	50.5	%	47.3	%	48.6	%
Dividend yield	—	%	—	%	—	%

Weighted-average exercise price and grant date fair value of stock options

The following table summarizes information about the weighted-average exercise price and the weighted-average grant date fair value of stock options granted:



	Year Ended December 31,
	2016		2015		2014
Weighted-average exercise price of the stock on the date of grant	$	4.32	$	9.00	$	11.20
Weighted-average grant date fair value on the date of grant	$	1.97	$	3.91	$	4.97

Schedule of activity for outstanding cash-settled stock appreciation rights

The following table summarizes activity for outstanding cash-settled stock appreciation rights for the year-ended December 31, 2016:



	Rights
Outstanding at beginning of period	103,133
Exercised	—
Expired or cancelled	(33,633	)
Outstanding at end of period	69,500

Exercisable at end of period	69,500

Schedule of performance-based restricted stock units

The ending TSR price is equal to the average closing price of our shares over the last 30-calendar days of the performance period as set forth in the following table:



	Year Ended December 31,
	2016		2015		2014
Number of performance-based restricted stock units issued, at target	230,790		136,881		110,497
Range of payout of shares for each executive	0% - 150%		0% - 150%		0% - 150%
Performance period begin date	June 1, 2016		June 1, 2015		June 1, 2014
Performance period end date	May 31, 2019		May 31, 2018		May 31, 2017
Estimated fair value at date of grant	$	5.18	$	10.06	$	12.55

Schedule of activity for outstanding performance-based restricted stock units

The following table summarizes activity for outstanding performance-based restricted stock units for the year-ended December 31, 2016:



Nonvested Performance-Based Restricted Stock Units	Shares		Weighted-Average Grant Date Fair Value
Outstanding at beginning of period	335,329		$	11.69
Granted	230,790		5.18
Vested	(58,072	)	13.11
Forfeited	(60,863	)	12.51
Outstanding at the end of period	447,184		$	8.06

Schedule of activity for outstanding time-vested restricted stock awards and restricted stock units

The following tables summarize the activity for our outstanding time-vested restricted stock awards and restricted stock units 2016.



Nonvested Restricted Stock Awards (Time-Vesting)	Shares		Weighted-Average Grant Date Fair Value
Nonvested at January 1, 2016	881,345		$	11.00
Granted	262,961		4.50
Vested	(449,342	)	10.50
Forfeited	(99,429	)	11.30
Nonvested at December 31, 2016	595,535		$	8.45



Nonvested Restricted Stock Units (Time-Vesting)	Shares		Weighted-Average Grant Date Fair Value
Nonvested at January 1, 2016	1,133,543		$	9.11
Granted	1,534,994		4.36
Vested	(332,043	)	9.30
Forfeited	(153,465	)	8.04
Nonvested at December 31, 2016	2,183,029		$	5.82

Segment and Related Information (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Schedule of segment reporting information

Summarized financial information concerning our reportable segments is shown in the following tables:



	Year Ended December 31,
(In thousands)	2016			2015			2014

Revenues
Fluids systems	$	395,461		$	581,136		$	965,049
Mats and integrated services	76,035			95,729			153,367
Total revenues	$	471,496		$	676,865		$	1,118,416

Depreciation and amortization
Fluids systems	$	20,746		$	22,108		$	22,934
Mats and integrated Services	14,227			18,869			15,507
Corporate office	2,982			2,940			2,734
Total depreciation and amortization	$	37,955		$	43,917		$	41,175

Operating income (loss)
Fluids systems	$	(43,631	)	$	(86,770	)	$	95,600
Mats and integrated services	14,741			24,949			70,526
Corporate office	(28,323		)	(37,278		)	(35,530		)
Operating income (loss)	$	(57,213	)	$	(99,099	)	$	130,596

Segment Assets
Fluids Systems	$	522,488		$	549,827		$	778,148
Mats and Integrated Services	164,515			172,415			175,318
Corporate	111,180			126,651			54,206
Total Assets	$	798,183		$	848,893		$	1,007,672

Capital Expenditures
Fluids Systems	$	32,310		$	40,533		$	36,626
Mats and Integrated Services	4,637			27,456			64,101
Corporate	1,493			1,415			5,215
Total Capital Expenditures	$	38,440		$	69,404		$	105,942

Schedule of revenue, geographical



	Year Ended December 31,
(In thousands)	2016		2015		2014

Revenue
United States	$	214,026	$	384,147	$	748,845
Canada	34,176		52,851		79,516
Algeria	80,936		65,272		58,417
All Other EMEA	96,654		109,252		118,827
Latin America	41,035		47,240		85,244
Asia Pacific	4,669		18,103		27,567
Total Revenue	$	471,496	$	676,865	$	1,118,416

Long-Lived Assets
United States	$	274,746	$	275,109	$	294,762
Canada	3,922		552		10,044
EMEA	48,047		50,759		55,560
Latin America	4,842		4,543		6,635
Asia Pacific	1,939		9,731		25,991
Total Long-Lived Assets	$	333,496	$	340,694	$	392,992

Supplemental Cash Flow and Other Information (Tables)

12 Months Ended

Dec. 31, 2016

Supplemental Cash Flow Elements [Abstract]

Impairments and other non-cash charges

Impairments and other non-cash charges in the consolidated statements of cash flows included the following:



	Year Ended December 31,
(In thousands)	2016		2015
Goodwill and other intangible asset impairments	$	3,104	$	70,720
Property, plant and equipment impairments	4,286		2,625
Inventory write-downs	4,075		2,163
Write-off of debt issuance costs on termination of Credit Agreement	1,058		—
Impairments and other non-cash charges in the Consolidated Statements of Cash Flows	$	12,523	$	75,508

Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2016

Discontinued Operations and Disposal Groups [Abstract]

Operations from discontinued operations

Summarized results of operations from discontinued operations are as follows:



(In thousands)	2014
Revenues	$	11,744
Income from discontinued operations before income taxes	1,770
Income from discontinued operations, net of tax	1,152
Gain from disposal of discontinued operations before income taxes	33,974
Gain from disposal of discontinued operations, net of tax	22,117

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum payments, operating leases



(In thousands)
2017	$	9,310
2018	6,128
2019	4,724
2020	3,805
2021	3,342
Thereafter	9,780
	$	37,089

Supplemental Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Supplemental selected quarterly financial data



(In thousands, except per share amounts)	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Fiscal Year 2016
Revenues	$	114,544		$	115,315		$	104,554		$	137,083
Operating loss	(18,825		)	(15,135		)	(15,055		)	(8,198		)
Net loss	(13,300		)	(13,904		)	(13,451		)	(57		)

Net loss per common share
Basic	$	(0.16	)	$	(0.17	)	$	(0.16	)	$	—
Diluted	$	(0.16	)	$	(0.17	)	$	(0.16	)	$	—

Fiscal Year 2015
Revenues	$	208,464		$	163,644		$	154,170		$	150,587
Operating income (loss)	6,128			(1,682		)	(9,263		)	(94,282		)
Net income (loss)	993			(4,254		)	(4,471		)	(83,096		)

Net income (loss) per common share
Basic	$	0.01		$	(0.05	)	$	(0.05	)	$	(1.00	)
Diluted	$	0.01		$	(0.05	)	$	(0.05	)	$	(1.00	)

Summary of Significant Accounting Policies (Details Textual)	12 Months Ended
	Dec. 31, 2016 USD ($) segments geographic_regions $ / shares	Dec. 31, 2015 USD ($)
Property, Plant and Equipment [Line Items]
Number of reportable segments \| segments	2
AOCI, foreign currency translation adjustment	$ (63,200,000)	$ (58,300,000)
Fluids systems [Member]
Property, Plant and Equipment [Line Items]
Number of operating geographic regions \| geographic_regions	4
Composite mats [Member] \| Mats and integrated services [Member]
Property, Plant and Equipment [Line Items]
Useful lives	7 years
Residual value	$ 0
Residual value (percentage)	20.00%
Reduction In depreciation expense	$ 6,100,000
Increase (decrease), change in accounting estimate (in dollars per share) \| $ / shares	$ (0.05)
Minimum [Member] \| Composite mats [Member]
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Minimum [Member] \| Composite mats [Member] \| Mats and integrated services [Member]
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Maximum [Member] \| Composite mats [Member]
Property, Plant and Equipment [Line Items]
Useful lives	12 years
Maximum [Member] \| Composite mats [Member] \| Mats and integrated services [Member]
Property, Plant and Equipment [Line Items]
Useful lives	12 years

Summary of Significant Accounting Policies - Estimated Useful Service Lives or Lease Term (Details)	12 Months Ended
	Dec. 31, 2016
Maximum [Member] \| Office equipment [Member]
Property, Plant and Equipment [Line Items]
Useful lives	5 years
Maximum [Member] \| Automobiles [Member]
Property, Plant and Equipment [Line Items]
Useful lives	7 years
Maximum [Member] \| Furniture, fixtures & trailers [Member]
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Maximum [Member] \| Composite mats [Member]
Property, Plant and Equipment [Line Items]
Useful lives	12 years
Maximum [Member] \| Machinery and heavy equipment [Member]
Property, Plant and Equipment [Line Items]
Useful lives	15 years
Maximum [Member] \| Building [Member]
Property, Plant and Equipment [Line Items]
Useful lives	39 years
Minimum [Member] \| Office equipment [Member]
Property, Plant and Equipment [Line Items]
Useful lives	3 years
Minimum [Member] \| Automobiles [Member]
Property, Plant and Equipment [Line Items]
Useful lives	5 years
Minimum [Member] \| Furniture, fixtures & trailers [Member]
Property, Plant and Equipment [Line Items]
Useful lives	7 years
Minimum [Member] \| Composite mats [Member]
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Minimum [Member] \| Machinery and heavy equipment [Member]
Property, Plant and Equipment [Line Items]
Useful lives	5 years
Minimum [Member] \| Building [Member]
Property, Plant and Equipment [Line Items]
Useful lives	20 years
Computer software, intangible asset [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Computer software, intangible asset [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful lives	3 years

Business Combination (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
Business Combination (Details) - USD ($) $ in Thousands	Aug. 31, 2016	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill, acquired during period		$ 1,720
Pragmatic Drilling Fluids Additives, Ltd [Member]
Business Acquisition [Line Items]
Business combination, consideration transferred	$ (4,400)
Finite-lived intangible assets acquired	$ 1,700
Fluids systems [Member]
Business Acquisition [Line Items]
Goodwill, acquired during period		$ 1,720

Inventories (Details) - USD ($) $ in Thousands	12 Months Ended
Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Inventory [Line Items]
Raw materials:	$ 116,536	$ 134,591
Total inventories	143,612	163,657
Asset impairment charges	12,523	75,508	$ 0
Drilling fluids
Inventory [Line Items]
Raw materials:	115,399	133,934
Mats
Inventory [Line Items]
Raw materials:	1,137	657
Finished goods	3,314	3,723
Blended drilling fluids components
Inventory [Line Items]
Finished goods	23,762	25,343
Total inventories	143,612	$ 163,657
Cost of sales [Member]
Inventory [Line Items]
Asset impairment charges	$ 4,100

Property, Plant and Equipment (Details Textual) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation			$ 34,600	$ 39,300	$ 33,200
Capital expenditures			38,440	69,404	105,942
Impairment of Long-Lived Assets Held-for-use			4,286	2,625
Inventory write-down			4,075	2,163
Fluids systems [Member]
Property, Plant and Equipment [Line Items]
Capital expenditures			32,310	40,533	36,626
Inventory write-down				2,600
Fluids systems [Member] \| Conroe and Fourchon Projects [Member]
Property, Plant and Equipment [Line Items]
Capital expenditures			27,800
Mats and integrated services [Member]
Property, Plant and Equipment [Line Items]
Capital expenditures			4,637	$ 27,456	$ 64,101
Mats and integrated services [Member] \| Composite mats [Member]
Property, Plant and Equipment [Line Items]
Reduction In depreciation expense			6,100
Uruguay [Member] \| Fluids systems [Member]
Property, Plant and Equipment [Line Items]
Impairment of Long-Lived Assets Held-for-use			$ 500
Asia Pacific [Member] \| Fluids systems [Member]
Property, Plant and Equipment [Line Items]
Impairment of Long-Lived Assets Held-for-use		$ 3,800
Inventory write-down	$ 2,600

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 437,491	$ 415,527
Less accumulated depreciation	(186,700)	(164,818)
Property, Plant and Equipment, Net, Excluding Capital Leased Assets	250,791	250,709
Composite mats (rental fleet)	100,543	100,341
Less accumulated depreciation - composite mats	(47,680)	(43,418)
Property, Plant and Equipment, Gross	52,863	56,923
Property, plant and equipment, net	303,654	307,632
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	11,505	11,613
Building and building improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	121,967	122,514
Machinery and heavy equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	248,229	224,974
Computer equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	30,544	29,688
Furniture, fixtures & trailers [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	5,829	5,788
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment	$ 19,417	$ 20,950

Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Aug. 31, 2016	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Goodwill, impairment loss			$ 3,104	$ 70,720
Amortization of intangible assets			3,400	4,600	$ 8,000
Fluids systems [Member]
Goodwill [Line Items]
Goodwill, impairment loss			$ 70,700	$ 70,720
Asia Pacific [Member] \| Fluids systems [Member]
Goodwill [Line Items]
Goodwill, impairment loss		$ 3,100
Pragmatic Drilling Fluids Additives, Ltd [Member]
Goodwill [Line Items]
Finite-lived intangible assets acquired	$ 1,700
Technology-based intangible assets [Member]
Goodwill [Line Items]
Finite-lived intangible asset, useful life			15 years
Customer-related intangible assets [Member]
Goodwill [Line Items]
Finite-lived intangible asset, useful life			9 years
Employment related intangible assets [Member]
Goodwill [Line Items]
Finite-lived intangible asset, useful life			5 years

Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Goodwill, beginning balance	$ 19,009	$ 91,893
Goodwill, impairment	(3,104)	(70,720)
Goodwill, effects of foreign currency	(734)	(2,164)
Goodwill, acquired during period	1,720
Goodwill, ending balance	19,995	19,009
Fluids systems [Member]
Goodwill [Line Items]
Goodwill, beginning balance	0	72,684
Goodwill, impairment	(70,700)	(70,720)
Goodwill, effects of foreign currency	(54)	(1,964)
Goodwill, acquired during period	1,720
Goodwill, ending balance	1,666	0
Mats and integrated services [Member]
Goodwill [Line Items]
Goodwill, beginning balance	19,009	19,209
Goodwill, impairment		0
Goodwill, effects of foreign currency	(680)	(200)
Goodwill, acquired during period	0
Goodwill, ending balance	$ 18,329	$ 19,009

Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 32,772	$ 34,771
Finite-lived intangible assets, accumulated amortization	(27,181)	(24,213)
Finite-lived intangible assets, net	5,591	10,558
Indefinite-lived intangible assets, gross carrying amount	476	493
Total intangible assets, gross carrying amount	33,248	35,264
Total intangible assets, net	6,067	11,051
Technology-based intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	5,766	5,077
Finite-lived intangible assets, accumulated amortization	(3,873)	(3,600)
Finite-lived intangible assets, net	1,893	1,477
Customer-related intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	25,158	28,069
Finite-lived intangible assets, accumulated amortization	(21,962)	(19,638)
Finite-lived intangible assets, net	3,196	8,431
Employment related intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	1,848	1,625
Finite-lived intangible assets, accumulated amortization	(1,346)	(975)
Finite-lived intangible assets, net	502	650
Permits and licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross carrying amount	$ 476	$ 493

Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, amortization expense, 2017	$ 2,408
Finite-lived intangible assets, amortization expense, 2018	988
Finite-lived intangible assets, amortization expense, 2019	758
Finite-lived intangible assets, amortization expense, 2020	623
Finite-lived intangible assets, amortization expense, 2021	443
Finite-lived intangible assets, amortization expense, thereafter	371
Finite-lived intangible assets, net	5,591	$ 10,558
Technology-based intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, amortization expense, 2017	339
Finite-lived intangible assets, amortization expense, 2018	339
Finite-lived intangible assets, amortization expense, 2019	339
Finite-lived intangible assets, amortization expense, 2020	310
Finite-lived intangible assets, amortization expense, 2021	259
Finite-lived intangible assets, amortization expense, thereafter	307
Finite-lived intangible assets, net	1,893	1,477
Customer-related intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, amortization expense, 2017	1,632
Finite-lived intangible assets, amortization expense, 2018	584
Finite-lived intangible assets, amortization expense, 2019	419
Finite-lived intangible assets, amortization expense, 2020	313
Finite-lived intangible assets, amortization expense, 2021	184
Finite-lived intangible assets, amortization expense, thereafter	64
Finite-lived intangible assets, net	3,196	8,431
Employment related intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, amortization expense, 2017	437
Finite-lived intangible assets, amortization expense, 2018	65
Finite-lived intangible assets, amortization expense, 2019	0
Finite-lived intangible assets, amortization expense, 2020	0
Finite-lived intangible assets, amortization expense, 2021	0
Finite-lived intangible assets, amortization expense, thereafter	0
Finite-lived intangible assets, net	$ 502	$ 650

Financing Arrangements (Details Textual) - USD ($)		1 Months Ended	3 Months Ended	12 Months Ended
Financing Arrangements (Details Textual) - USD ($)	May 12, 2016	May 31, 2016	Jun. 30, 2016	Dec. 31, 2021	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jan. 01, 2017	Mar. 31, 2015
Gain on extinguishment of debt					$ 1,615,000	$ 0	$ 0
Conversion price percentage					130.00%
Business day period					5 days
Consecutive trading day period					5 days
Percent threshold last reported sale price					98.00%
Net deferred tax liabilities					$ (36,996,000)	(24,547,000)
Long-term debt, excluding current maturities					72,900,000	171,211,000
Non-cash charge, interest expense					1,058,000	0
Secured debt outstanding					0
Current debt					83,368,000	7,382,000
Restricted cash and cash equivalents, current					6,539,000
Interest expense					9,900,000	9,100,000	10,400,000
Interest costs capitalized						1,128,000	$ 751,000
Prepaid Expenses and Other Current Assets [Member]
Restricted cash and cash equivalents, current					7,421,000	17,485,000
Foreign Operations [Member]
Current debt					380,000	$ 7,392,000
Restricted cash and cash equivalents, current					$ 882,000
Scenario, forecast [Member]
Interest costs capitalized				$ 926,000
Repayments of debt				$ 100,000,000
Senior notes [Member]
Debt conversion, converted shares for basis principal (shares)					107.1381
Debt conversion, principal amount as basis for conversion rate					$ 1,000
Debt instrument, convertible, threshold trading days					20
Debt instrument, convertible, threshold consecutive trading days					30 days
Net deferred tax liabilities					$ (8,700,000)
Interest rate, effective percentage					11.30%
Convertible Notes due 2017 [Member] \| Senior notes [Member]
Debt instrument, face amount					$ 172,500,000.0
Unsecured debt, principal amount					$ 83,300,000
Interest rate, stated percentage					4.00%
Debt conversion, converted shares for basis principal (shares)					90.8893
Debt conversion, principal amount as basis for conversion rate					$ 1,000
Debt Instrument, convertible, conversion price (dollars per share)					$ 11.00
Repurchased face amount					$ 89,300,000
Debt instrument, repurchase amount					87,300,000
Convertible Notes due 2021 [Member] \| Senior notes [Member]
Debt instrument, face amount					$ 100,000,000
Interest rate, stated percentage					4.00%
Debt Instrument, convertible, conversion price (dollars per share)					$ 9.33
ABL Facility [Member] \| Federal Funds Rate [Member]
Base rate basis spread on variable rate	0.50%	0.50%
ABL Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Base rate basis spread on variable rate	1.00%	1.00%
Basis spread on variable rate	3.50%	3.50%
ABL Facility [Member] \| Base Rate [Member]
Basis spread on variable rate	2.50%	2.50%
ABL Facility [Member] \| Minimum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Basis spread on variable rate	2.25%	2.25%
ABL Facility [Member] \| Minimum [Member] \| Base Rate [Member]
Basis spread on variable rate	1.25%	1.25%
ABL Facility [Member] \| Maximum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Basis spread on variable rate	3.50%	3.50%
ABL Facility [Member] \| Maximum [Member] \| Base Rate [Member]
Basis spread on variable rate	2.50%	2.50%
ABL Facility [Member] \| Revolving Credit Facility [Member]
Maximum borrowing capacity		$ 90,000,000.0
Fixed charge coverage ratio, amount	$ 25,000,000	$ 25,000,000
Remaining borrowing capacity					$ 60,500,000
Unused capacity, commitment fee percentage					0.625%
Covenant terms acceleration of other indebtedness	$ 25,000,000
ABL Facility [Member] \| Revolving Credit Facility [Member] \| Minimum [Member]
Unused capacity, commitment fee percentage	0.375%	0.375%
ABL Facility [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Maximum borrowing capacity		$ 150,000,000.0
Unused capacity, commitment fee percentage	0.625%	0.625%
ABL Facility [Member] \| Revolving Credit Facility [Member] \| Scenario, forecast [Member]
Remaining borrowing capacity								$ 76,300,000
Credit Agreement [Member]
Letters of credit outstanding, amount					$ 5,948,000
Credit Agreement [Member] \| Foreign Operations [Member]
Letters of credit outstanding, amount					11,282,000
Credit Agreement [Member] \| Revolving Credit Facility [Member]
Maximum borrowing capacity					150,000,000				$ 200,000,000
Long-term line of credit		$ 0
Non-cash charge, interest expense			$ 1,100,000
Convertible debt, debt component [Member]
Debt issuance cost					2,700,000
Long-term debt, excluding current maturities					72,900,000
Unamortized debt discount					$ 24,400,000
Convertible debt, debt component [Member] \| Senior notes [Member]
Interest rate, stated percentage					10.487%
Debt instrument, fair value					$ 75,200,000
Convertible debt, equity component [Member]
Debt instrument, conversion equity amount					24,800,000
Debt issuance cost					900,000
Debt instrument, conversion equity, carrying amount net of issuance costs and deferred tax liability					$ 15,200,000

Financing Arrangements (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term debt, gross	$ 183,636	$ 179,889
Unamortized discount and debt issuance costs	(27,368)	(1,296)
Long-term debt	156,268	178,593
Long-term debt, current maturities, gross	(83,636)	(7,382)
Unamortized discount and debt issuance costs, current	268	0
Long-term debt, current maturities	83,368	7,382
Long-term debt, excluding current maturities, gross	100,000	172,507
Unamortized discount and debt issuance costs, noncurrent	(27,100)	(1,296)
Long-term debt, excluding current maturities	72,900	171,211
Other Debt [Member]
Debt Instrument [Line Items]
Long-term debt, gross	380	7,392
Long-term debt	380	7,392
Senior notes [Member] \| Convertible Notes due 2017 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	83,256	172,497
Unamortized discount and debt issuance costs	(268)	(1,296)
Long-term debt	82,988	171,201
Senior notes [Member] \| Convertible Notes due 2021 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	100,000	0
Unamortized discount and debt issuance costs	(27,100)	0
Long-term debt	72,900	0
Revolving Credit Facility [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Long-term debt, gross	0	0
Long-term debt	0	0
Revolving Credit Facility [Member] \| ABL Facility [Member]
Debt Instrument [Line Items]
Long-term debt, gross	0	0
Long-term debt	$ 0	$ 0

Fair Value of Financial Instruments and Concentrations of Credit Risk (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) customer	Dec. 31, 2015 USD ($)	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of major customers \| customer	20
Receivables, net [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Increase (decrease) in income taxes receivable	$ 38.0	$ 29.0
Nontrade receivables	11.5	10.4
Environmental services [Member] \| Receivables, net [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Escrow deposit	$ 8.0	$ 8.0
Sales revenue, net [Member] \| Twenty largest customers [Member] \| Customer concentration risk [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Concentration risk, percentage	53.00%	49.00%	40.00%
Sales revenue, net [Member] \| Sonatrach [Member] \| Customer concentration risk [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Concentration risk, percentage	14.00%
Accounts receivable [Member] \| Sonatrach [Member] \| Customer concentration risk [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Concentration risk, percentage	14.00%
Convertible Notes due 2017 [Member] \| Senior notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 84.4	$ 154.4
Convertible Notes due 2021 [Member] \| Senior notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value		$ 110.5

Fair Value of Financial Instruments and Concentrations of Credit Risk - Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Gross trade receivables	$ 162,569	$ 159,119
Allowance for doubtful accounts	(8,849)	(7,189)
Net trade receivables	153,720	151,930
Income tax receivables	39,944	32,600
Other receivables	20,643	21,834
Total receivables, net	$ 214,307	$ 206,364

Fair Value of Financial Instruments and Concentrations of Credit Risk - Allowances for Losses on Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Provision for uncollectible accounts	$ 2,416	$ 1,886	$ 1,252
Continuing operations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance at beginning of year	7,189	5,458	4,142
Provision for uncollectible accounts	2,416	1,886	1,246
Write-offs, net of recoveries	(756)	(155)	70
Balance at end of year	$ 8,849	$ 7,189	$ 5,458

Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Income Taxes (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Contingency [Line Items]
Deferred tax assets, valuation allowance	$ 21,847	$ 16,780
Income tax charge increase in valuation allowance for deferred tax assets	4,500	4,600
Income tax benefit, forgiveness of certain inter-company balances, Brazilian subsidiary		4,400
Income tax benefit, release of U.S. v tax reserves		2,200
Deferred tax assets, NOL carryforwards, state and local	240,500
Deferred tax assets, NOL carryforwards, foreign	26,400
Unremitted foreign earnings permanently reinvested abroad	161,700	142,800
Unrecognized tax benefits that would impact effective tax rate	500	2,200
Unrecognized tax benefits, income tax penalties and interest expense		100	$ 400
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	100	$ 100
BRAZILIAN ENERGY EXCHANGE [Member]
Income Tax Contingency [Line Items]
Effective income tax rate benefit, worthless stock deduction	$ (9,300)

Income Taxes - Provision For Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current tax expense (benefit):
U.S. Federal	$ (37,854)	$ (32,272)	$ 17,086
State	20	(34)	2,170
Foreign	10,440	11,411	9,925
Total current	(27,394)	(20,895)	29,181
Deferred tax expense (benefit):
U.S. Federal	2,670	(2,624)	12,237
State	(181)	179	(174)
Foreign	863	1,942	(196)
Total deferred	3,352	(503)	11,867
Total income tax expense (benefit)	$ (24,042)	$ (21,398)	$ 41,048

Income Taxes - Total Provision Allocated In Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Income (loss) from continuing operations	$ (24,042)	$ (21,398)	$ 41,048
Total provision (benefit)	(24,042)	(21,398)	53,523
Continuing operations [Member]
Operating Loss Carryforwards [Line Items]
Income (loss) from continuing operations	(24,042)	(21,398)	41,048
Discontinued operations
Operating Loss Carryforwards [Line Items]
Income from discontinued operations	$ 0	$ 0	$ 12,475

Income Taxes - Income from Operations Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
U.S.	$ (76,805)	$ (122,082)	$ 88,964
Foreign	12,051	9,856	31,093
Income (loss) from continuing operations before income taxes	$ (64,754)	$ (112,226)	$ 120,057

Income Taxes - Effective Income Tax Reconciliation (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income tax expense (benefit) at federal statutory rate	35.00%	35.00%	35.00%
Nondeductible expenses	(2.80%)	(2.80%)	2.90%
Worthless stock deduction - Brazil	14.40%	0.00%	0.00%
Goodwill and other asset impairments	3.50%	15.70%	0.00%
Manufacturing deduction	0.80%	1.80%	1.90%
Different rates on earnings of foreign operations	1.20%	3.60%	(4.30%)
Change in valuation allowance	(6.90%)	(2.80%)	2.10%
Uncertain tax positions	0.00%	2.20%	0.60%
State tax expense (benefit), net	2.50%	1.50%	1.00%
Other items, net	(2.00%)	(0.10%)	(1.20%)
Total income tax expense (benefit)	37.10%	19.10%	34.20%

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Net operating losses	$ 18,771	$ 14,800
Capitalized inventory costs	12,378	6,717
Stock based compensation	6,955	6,460
Accruals not currently deductible	4,883	6,157
Unrealized foreign exchange losses, net	3,087	3,013
Foreign tax credits	3,269	2,558
Other	1,871	599
Total deferred tax assets	51,214	40,304
Valuation allowance	(21,847)	(16,780)
Total deferred tax assets, net of allowances	29,367	23,524
Deferred tax liabilities:
Accelerated depreciation and amortization	(43,225)	(38,034)
Original issue discount on Convertible Notes due 2021	(8,553)	0
Tax on unremitted earnings	(8,555)	(7,181)
Other	(6,030)	(2,856)
Total deferred tax liabilities	(66,363)	(48,071)
Total net deferred tax liabilities	(36,996)	(24,547)
Non-current deferred tax assets	1,747	1,821
Non-current deferred tax liabilities	(38,743)	(26,368)
Net deferred tax liabilities	$ 36,996	$ 24,547

Income Taxes - Uncertain Tax Positions Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Balance at January 1	$ 419	$ 3,786	$ 2,175
Additions (reductions) for tax positions of prior years	477	(95)	1,604
Additions for tax positions of current year	0
(reductions) for tax positions of current year			7
Reductions for settlements with tax authorities		(575)	0
Reductions for lapse of statute of limitations	(231)	(2,697)	0
Balance at December 31	$ 665	$ 419	$ 3,786

Changes in Outstanding Common Stock (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity [Abstract]
Outstanding, beginning of year (in shares)	99,377	99,204	98,031
Shares issued upon exercise of options (in shares)	125	104	540
Shares issued for time vested restricted stock (net of cancellations) (in shares)	341	69	633
Outstanding, end of year (in shares)	99,843	99,377	99,204

Capital Stock (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
Capital Stock (Details Textual) - USD ($)	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Feb. 28, 2016
Equity, Class of Treasury Stock [Line Items]
Treasury stock, common, shares		15,162,050	15,302,345	15,210,233
Preferred stock, par or stated value per share		$ 0.01
Preferred stock, shares outstanding		0	0	0
Treasury shares purchased				$ 50,596,000
Share repurchase program [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury stock, shares, acquired		0	0	4,317,278
Stock repurchase program, authorized amount		$ 100,000,000
Treasury stock acquired, average cost per share				$ 11.72
Stock repurchase program, remaining authorized repurchase amount		$ 33,500,000
Employee Stock Purchase Plan [Member]
Equity, Class of Treasury Stock [Line Items]
Preferred stock, shares authorized		1,000,000
Treasury stock, shares, acquired		234,901	292,168	215,760
Treasury stock issued during period		375,196	200,056	155,650
Restricted stock [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury shares purchased		$ 1,229,000	$ 2,283,000	$ 2,534,000
Convertible Notes due 2017 [Member] \| Convertible debt [Member] \| Share repurchase program [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchased face amount					$ 11,200,000
Convertible Notes due 2017 [Member] \| Senior notes [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchased face amount		89,300,000
Debt instrument, face amount		172,500,000.0
Convertible Notes due 2017 [Member] \| Senior notes [Member] \| Share repurchase program [Member]
Equity, Class of Treasury Stock [Line Items]
Purchase Of senior notes	$ 9,200,000
Debt authorized repurchase amount		$ 78,100,000

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Numerator
Basic - income (loss) from continuing operations	$ (40,712)	$ (90,828)	$ 79,009
Assumed conversions of Convertible Notes due 2017	0	0	5,091
Diluted - adjusted income (loss) from continuing operations	$ (40,712)	$ (90,828)	$ 84,100
Denominator
Basic - weighted average common shares outstanding (in shares)	83,697	82,722	82,999
Dilutive effect of stock options and restricted stock awards (in shares)	0	0	1,733
Diluted weighted average number of common shares outstanding (in shares)	83,697	82,722	100,414
Income (loss) from continuing operations (in dollars per share)	$ (0.49)	$ (1.10)	$ 0.95
Income (loss) from continuing operations (in dollars per share)	$ (0.49)	$ (1.10)	$ 0.84
Convertible Notes due 2017 [Member] \| Convertible debt [Member]
Denominator
Dilutive effect of the convertible notes (in shares)	0	0	15,682
Convertible Notes due 2021 [Member] \| Convertible debt [Member]
Denominator
Dilutive effect of the convertible notes (in shares)	0	0	0

Earnings Per Share (Details 2) - shares shares in Thousands	12 Months Ended
Earnings Per Share (Details 2) - shares shares in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options and restricted stock-based awards	7,482	3,884	788
Convertible Notes due 2017 [Member] \| Convertible debt [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options and restricted stock-based awards	14,295	15,682	0
Convertible Notes due 2021 [Member] \| Convertible debt [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options and restricted stock-based awards	0	0	0

Stock Based Compensation and Other Benefit Plans (Details Textual)	1 Months Ended	12 Months Ended
	May 31, 2014 USD ($)	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares	Dec. 31, 2014 USD ($) $ / shares
Options granted \| shares		1,242,856
Dividend yield		0.00%
Value of options exercised		$ 141,000	$ 325,000	$ 3,200,000
Proceeds from options exercised		700,000	600,000	3,400,000
Tax benefit from compensation expense		2,300,000	2,600,000	2,600,000
Tax benefits from exercise of stock options		$ 100,000	100,000	1,000,000
Maximum annual contributions per employee (percent)		50.00%
Employer discretionary contribution amount		$ 881,000	$ 3,231,000	$ 3,600,000
Restricted stock [Member]
Estimated fair value at date of grant \| $ / shares		$ 4.50
Employee Stock Option [Member]
Vesting period		3 years
Expiration period		10 years
Dividend yield		0.00%	0.00%	0.00%
Stock Appreciation Rights (SARs) [Member]
Cash settlement of stock appreciation rights \| $ / shares		$ 7.89
Cash settled stock appreciation rights fair value \| $ / shares		$ 1.71438
Share-based arrangement, liability		$ 100,000
Performance Based Restricted Stock Units [Member]
Estimated fair value at date of grant \| $ / shares		$ 5.18	$ 10.06	$ 12.55
Dividend yield		0.00%	0.00%	0.00%
Allocated share-based compensation expense		$ 982,000	$ 1,119,000	$ 500,000
Vested (in dollars)		400,000
Restricted Stock Units and Restricted Stock Awards [Member]
Tax benefit from compensation expense		1,524,000	2,037,000	2,800,000
Allocated share-based compensation expense		8,615,000	10,074,000	8,600,000
Compensation cost not yet recognized		$ 10,900,000
Period for recognition		1 year 9 months 18 days
Fair value of shares vested		$ 3,896,000	$ 8,061,000	$ 9,000,000
Restricted Stock Units and Restricted Stock Awards [Member] \| Minimum [Member]
Vesting period			3 years
Restricted Stock Units and Restricted Stock Awards [Member] \| Maximum [Member]
Vesting period			4 years
The 2014 Director Plan [Member]
Number of shares authorized \| shares		1,000,000
Shares available for grant \| shares		602,972
The 2014 Director Plan [Member] \| Non-employee Directors [Member]
Number of restricted shares granted	$ 150,000
The 2014 Director Plan [Member] \| Non-employee Directors [Member] \| Restricted stock [Member]
Granted, restricted stock \| shares		212,961
Estimated fair value at date of grant \| $ / shares		$ 4.32
The 2014 Director Plan [Member] \| Board of Directors Chairman [Member]
Number of restricted shares granted	$ 170,000
2015 Plan [Member]
Shares available for grant \| shares		650,951
2015 Plan [Member] \| Minimum [Member]
Number of shares authorized \| shares		6,000,000
2015 Plan [Member] \| Maximum [Member]
Number of shares authorized \| shares		7,800,000
2015 Plan [Member] \| Full Value Awards [Member]
Shares available for grant reduction rate		1.78
2015 Plan [Member] \| Grants of Stock Options and Stock Appreciation Rights [Member]
Shares available for grant reduction rate		1
2006 Equity Incentive Plan [Member]
Shares available for grant \| shares		0
Participants Contributions Up to 3 Percent of Compensation [Member]
Employer matching contribution, percent of employees' gross pay		3.00%
Employer matching contribution, percent of match		100.00%
Participants Contributions from 3 Percent to 6 Percent of Compensation [Member]
Options granted \| shares		1,242,856
Employer matching contribution, percent of match		50.00%
Participants Contributions from 3 Percent to 6 Percent of Compensation [Member] \| Minimum [Member]
Employer matching contribution, percent of employees' gross pay		3.00%
Participants Contributions from 3 Percent to 6 Percent of Compensation [Member] \| Maximum [Member]
Employer matching contribution, percent of employees' gross pay		6.00%

Stock Based Compensation and Other Benefit Plans - Stock Options Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Outstanding at beginning of period (in shares)	3,887,833
Outstanding at beginning of period (in dollars per share)	$ 7.96
Options granted	1,242,856
Weighted-average exercise price of the stock on the date of grant	$ 4.32	$ 9.00	$ 11.20
Exercised (in shares)	(125,017)
Exercised (in dollars per share)	$ 5.80
Expired or cancelled (in shares)	(320,833)
Expired or cancelled (in dollars per share)	$ 8.43
Outstanding at end of period (in shares)	4,684,839	3,887,833
Outstanding at end of period (in dollars per share)	$ 7.02	$ 7.96
Outstanding at end of period	6 years 51 days
Outstanding at end of period	$ 7,130,887
Vested or expected to vest at end of period (in shares)	4,592,882
Vested or expected to vest at end of period (in dollars per share)	$ 7.06
Vested or expected to vest at end of period	6 years 29 days
Vested or expected to vest at end of period	$ 6,878,173
Options exercisable at end of period (in shares)	2,910,115
Options exercisable at end of period (in dollars per share)	$ 7.67
Options exercisable at end of period	4 years 146 days
Options exercisable at end of period	$ 3,235,311

- Weighted Average Assumptions, Options (Details)	12 Months Ended
- Weighted Average Assumptions, Options (Details)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Dividend yield	0.00%
Employee Stock Option [Member]
Risk-free interest rate	1.38%	1.57%	1.53%
Expected life of the option in years	5 years 80 days	5 years 80 days	5 years 80 days
Expected volatility	50.50%	47.30%	48.60%
Dividend yield	0.00%	0.00%	0.00%

Stock Based Compensation and Other Benefit Plans - Weighted-average Exercise Price and Weighted-Average Grant Date Fair Value, Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted-average exercise price of the stock on the date of grant	$ 4.32	$ 9.00	$ 11.20
Weighted-average grant date fair value on the date of grant	$ 1.97	$ 3.91	$ 4.97

Stock Based Compensation and Other Benefit Plans - Stock Appreciation Rights Activity (Details) - Stock Appreciation Rights (SARs) [Member]	12 Months Ended
	Dec. 31, 2016 shares
Outstanding at beginning of period (in shares)	103,133
Exercised (in shares)	0
Expired or cancelled (in shares)	(33,633)
Outstanding at end of period (in shares)	69,500
Exercisable at end of period (in shares)	69,500

Stock Based Compensation and Other Benefit Plans - Performance-Based Restricted Stock Units (Details) - Performance Based Restricted Stock Units [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	230,790	136,881	110,497
Range of payout of shares for each executive, minimum	0.00%	0.00%	0.00%
Range of payout of shares for each executive, maximum	150.00%	150.00%	150.00%
Estimated fair value at date of grant	$ 5.18	$ 10.06	$ 12.55

Stock Based Compensation and Other Benefit Plans - Weighted Average Assumptions, Restricted Stock Units (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	May 16, 2016	May 19, 2015	May 16, 2014
Dividend yield	0.00%
Performance Based Restricted Stock Units [Member]
Risk-free interest rate	0.95%	1.02%	0.81%
Average closing price(1)				$ 4.69	$ 8.96	$ 11.28
Expected volatility	46.89%	38.40%	44.50%
Dividend yield	0.00%	0.00%	0.00%

Stock Based Compensation and Other Benefit Plans - Restricted Stock Activity (Details) - Performance Based Restricted Stock Units [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Outstanding at beginning of period (in shares)	335,329
Outstanding at beginning of period (in dollars per share)	$ 11.69
Granted (in shares)	230,790	136,881	110,497
Granted (in dollars per share)	$ 5.18	$ 10.06	$ 12.55
Vested (in shares)	(58,072)
Vested (in dollars per share)	$ 13.11
Forfeited (in shares)	(60,863)
Forfeited (in dollars per share)	$ 12.51
Outstanding at the end of period (in shares)	447,184	335,329
Outstanding at the end of period (in dollars per share)	$ 8.06	$ 11.69

Stock Based Compensation and Other Benefit Plans - Time-vested Restricted Stock (Details)	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Restricted stock [Member]
Outstanding at beginning of period (in shares) \| shares	881,345
Outstanding at beginning of period (in dollars per share) \| $ / shares	$ 11.00
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period \| shares	262,961
Estimated fair value at date of grant \| $ / shares	$ 4.50
Vested (in shares) \| shares	(449,342)
Vested (in dollars per share) \| $ / shares	$ 10.50
Forfeited (in shares) \| shares	(99,429)
Forfeited (in dollars per share) \| $ / shares	$ 11.30
Outstanding at the end of period (in shares) \| shares	595,535
Outstanding at the end of period (in dollars per share) \| $ / shares	$ 8.45
Restricted Stock Units (RSUs) [Member]
Outstanding at beginning of period (in shares) \| shares	1,133,543
Outstanding at beginning of period (in dollars per share) \| $ / shares	$ 9.11
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period \| shares	1,534,994
Estimated fair value at date of grant \| $ / shares	$ 4.36
Vested (in shares) \| shares	(332,043)
Vested (in dollars per share) \| $ / shares	$ 9.30
Forfeited (in shares) \| shares	(153,465)
Forfeited (in dollars per share) \| $ / shares	$ 8.04
Outstanding at the end of period (in shares) \| shares	2,183,029
Outstanding at the end of period (in dollars per share) \| $ / shares	$ 5.82

Segment and Related Information (Details Textual) $ in Thousands		3 Months Ended				9 Months Ended		12 Months Ended			21 Months Ended
	Nov. 01, 2015 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2016 employee	Sep. 30, 2015 employee	Dec. 31, 2016 USD ($) segments	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2016 employee
Segment Reporting Information [Line Items]
Number of reportable segments \| segments								2
Supplemental unemployment benefits, severance benefits		$ 300			$ 3,300			$ 300	$ 3,300
Asset impairment charges								12,523	75,508	$ 0
Impairment of Long-Lived Assets Held-for-use								4,286	2,625
Inventory write-down								4,075	2,163
Goodwill, impairment loss								3,104	70,720
Impairments and other charges								6,745	78,345	$ 0
Fluids systems [Member]
Segment Reporting Information [Line Items]
Asset impairment charges	$ 2,200
Inventory write-down									2,600
Goodwill, impairment loss								$ 70,700	70,720
Mats and integrated services [Member]
Segment Reporting Information [Line Items]
Goodwill, impairment loss									0
Discontinued operations
Segment Reporting Information [Line Items]
Number of reportable segments \| segments								2
North America [Member]
Segment Reporting Information [Line Items]
Restructuring and related cost, number of positions eliminated \| employee						190	436				626
Percentage of workforce reduction											48.00%
Uruguay [Member] \| Corporate office [Member]
Segment Reporting Information [Line Items]
Asset write downs and litigation settlement								$ 14,800	80,500
Uruguay [Member] \| Fluids systems [Member]
Segment Reporting Information [Line Items]
Asset write downs and litigation settlement								15,500	$ 75,500
Impairment of Long-Lived Assets Held-for-use								500
Exit costs		2,000	$ 2,500
Asia Pacific [Member] \| Fluids systems [Member]
Segment Reporting Information [Line Items]
Asset impairment charges				$ 6,900
Impairment of Long-Lived Assets Held-for-use				3,800
Inventory write-down		2,600
Goodwill, impairment loss				$ 3,100
Cost of sales [Member]
Segment Reporting Information [Line Items]
Asset impairment charges								4,100
Impairments and other charges								8,038
Cost of sales [Member] \| Uruguay [Member]
Segment Reporting Information [Line Items]
Inventory write-down								4,500
Exit costs								4,000
Composite mats [Member] \| Mats and integrated services [Member]
Segment Reporting Information [Line Items]
Reduction In depreciation expense								$ 6,100
Sales revenue, net [Member] \| Sonatrach [Member] \| Customer concentration risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, percentage								14.00%
Threatened litigation [Member] \| Wage and hour litigation [Member] \| Unfavorable regulatory action [Member]
Segment Reporting Information [Line Items]
Litigation settlement, amount		$ 700
Settled litigation [Member] \| Unfavorable regulatory action [Member]
Segment Reporting Information [Line Items]
Litigation settlement, amount					$ (5,000)

Segment and Related Information - Financial Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues
Revenues									$ 471,496	$ 676,865	$ 1,118,416
Depreciation and Amortization
Depreciation and amortization									37,955	43,917	42,030
Operating Income (loss)
Operating Income (loss)	$ (8,198)	$ (15,055)	$ (15,135)	$ (18,825)	$ (94,282)	$ (9,263)	$ (1,682)	$ 6,128	(57,213)	(99,099)	130,596
Segment Assets
Assets	798,183				848,893				798,183	848,893	1,007,672
Capital Expenditures
Capital expenditures									38,440	69,404	105,942
Fluids systems [Member]
Revenues
Revenues									395,461	581,136	965,049
Depreciation and Amortization
Depreciation and amortization									20,746	22,108	22,934
Operating Income (loss)
Operating Income (loss)									(43,631)	(86,770)	95,600
Segment Assets
Assets	522,488				549,827				522,488	549,827	778,148
Capital Expenditures
Capital expenditures									32,310	40,533	36,626
Mats and integrated services [Member]
Revenues
Revenues									76,035	95,729	153,367
Depreciation and Amortization
Depreciation and amortization									14,227	18,869	15,507
Operating Income (loss)
Operating Income (loss)									14,741	24,949	70,526
Segment Assets
Assets	164,515				172,415				164,515	172,415	175,318
Capital Expenditures
Capital expenditures									4,637	27,456	64,101
Corporate [Member]
Depreciation and Amortization
Depreciation and amortization									2,982	2,940	2,734
Operating Income (loss)
Operating Income (loss)									(28,323)	(37,278)	(35,530)
Segment Assets
Assets	$ 111,180				$ 126,651				111,180	126,651	54,206
Capital Expenditures
Capital expenditures									1,493	1,415	5,215
Environmental services [Member]
Depreciation and Amortization
Depreciation and amortization											900
Capital Expenditures
Capital expenditures											1,000
Continuing operations [Member]
Depreciation and Amortization
Depreciation and amortization									$ 37,955	$ 43,917	$ 41,175

Segment and Related Information - Employee Termination Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Severance costs	$ 4,572	$ 8,163
Fluids systems [Member]
Segment Reporting Information [Line Items]
Severance costs	4,125	7,218
Mats and integrated services [Member]
Segment Reporting Information [Line Items]
Severance costs	285	717
Corporate [Member]
Segment Reporting Information [Line Items]
Severance costs	162	228
Cost of sales [Member]
Segment Reporting Information [Line Items]
Severance costs	3,647	5,664
Selling, general and administrative expenses [Member]
Segment Reporting Information [Line Items]
Severance costs	$ 925	$ 2,499

Segment and Related Information - Financial Information by Geographical Area (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 137,083	$ 104,554	$ 115,315	$ 114,544	$ 150,587	$ 154,170	$ 163,644	$ 208,464	$ 471,496	$ 676,865	$ 1,118,416
Long-Lived Assets	333,496				340,694				333,496	340,694	392,992
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									214,026	384,147	748,845
Long-Lived Assets	274,746				275,109				274,746	275,109	294,762
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									34,176	52,851	79,516
Long-Lived Assets	3,922				552				3,922	552	10,044
Algeria [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									80,936	65,272	58,417
EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									96,654	109,252	118,827
Long-Lived Assets	48,047				50,759				48,047	50,759	55,560
Latin America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									41,035	47,240	85,244
Long-Lived Assets	4,842				4,543				4,842	4,543	6,635
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									4,669	18,103	27,567
Long-Lived Assets	$ 1,939				$ 9,731				$ 1,939	$ 9,731	$ 25,991

Supplemental Cash Flow and Other Information (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Significant Noncash Transactions [Line Items]
Accrual for capital expenditures	$ 2,000	$ 3,900	$ 1,200
Accrued liabilities	31,152	45,835
Accrued liabilities current [Member]
Other Significant Noncash Transactions [Line Items]
Accrued liabilities	31,200	45,800
Employee-related liabilities	$ 11,900	$ 15,100

Supplemental Cash Flow and Other Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Supplemental Cash Flow Elements [Abstract]
Goodwill, impairment loss	$ 3,104	$ 70,720
Impairment of Long-Lived Assets Held-for-use	4,286	2,625
Inventory write-down	4,075	2,163
Write off of Deferred Debt Issuance Cost	1,058	0
Impairments and other non-cash charges	$ 12,523	$ 75,508	$ 0

Discontinued Operations (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
Discontinued Operations (Details Textual) - USD ($)	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of a business		$ 0	$ 0	$ 89,766,000
Gain from disposal of discontinued operations before income taxes		0	0	33,974,000
Gain from disposal of discontinued operations, net of tax		0	$ 0	22,117,000
Environmental services [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses	$ 100,000,000
Proceeds from sale of a business	89,800,000
Gain from disposal of discontinued operations before income taxes				34,000,000
Gain from disposal of discontinued operations, net of tax				22,100,000
Ecoserv [Member] \| Environmental services [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Escrow deposit	8,000,000			8,000,000
Released 9 months from closing date \| Ecoserv [Member] \| Environmental services [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Escrow deposit	$ 4,000,000			4,000,000
Released 18 months from closing date \| Ecoserv [Member] \| Environmental services [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Escrow deposit		$ 4,000,000.0		$ 4,000,000

Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
Discontinued Operations (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]
Revenues			$ 11,744
Income from discontinued operations before income taxes			1,770
Income from discontinued operations, net of tax	$ 0	$ 0	1,152
Gain from disposal of discontinued operations before income taxes	0	0	33,974
Gain from disposal of discontinued operations, net of tax	$ 0	$ 0	$ 22,117

- Definition

Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

+ References + Details

- Definition

Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

+ References + Details

Commitments and Contingencies (Details Textual)		1 Months Ended	3 Months Ended			6 Months Ended	12 Months Ended
Commitments and Contingencies (Details Textual)	Oct. 25, 2016 employee	Mar. 31, 2015 case	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) case employee	Dec. 31, 2014 USD ($) employee	Dec. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Mar. 31, 2014 USD ($)
Loss Contingencies [Line Items]
Guarantee obligations due to closure of bonds							$ 384,000	$ 384,000
Asset retirement obligation			$ 962,000	$ 839,000		$ 962,000	$ 962,000	839,000
Minimum [Member]
Loss Contingencies [Line Items]
Operating lease term							1 year
Maximum [Member]
Loss Contingencies [Line Items]
Operating lease term							10 years
Settled litigation [Member] \| Unfavorable regulatory action [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount				$ (5,000,000)
Wage and hour litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, new claims filed, number \| case				2
Wage and hour litigation [Member] \| Threatened litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, number of plaintiffs \| employee					5
Loss contingency, new claims filed, number \| case		2
Loss contingency, pending claims, number \| case		8
Wage and hour litigation [Member] \| Threatened litigation [Member] \| Unfavorable regulatory action [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount			700,000
Loss contingency, number of defendants \| employee	379
Loss contingency, percentage of participating employees eligible for settlement	67.00%
Payments for legal settlement						4,500,000
Wage and hour litigation [Member] \| Judicial ruling [Member] \| Unfavorable regulatory action [Member]
Loss Contingencies [Line Items]
Loss contingency, employees eligible for settlement \| employee				569
Ecoserv [Member] \| Environmental services [Member]
Loss Contingencies [Line Items]
Escrow deposit					$ 8,000,000				$ 8,000,000	$ 8,000,000
Released 9 months from closing date \| Ecoserv [Member] \| Environmental services [Member]
Loss Contingencies [Line Items]
Escrow deposit					4,000,000				4,000,000	$ 4,000,000
Released 18 months from closing date \| Ecoserv [Member] \| Environmental services [Member]
Loss Contingencies [Line Items]
Escrow deposit			4,000,000.0		$ 4,000,000	4,000,000.0	$ 4,000,000.0		4,000,000
Letters of credit in favor of insurance company [Member]
Loss Contingencies [Line Items]
Operating leases, rent expense							21,000,000	22,600,000.0	$ 25,500,000.0
Other commitment			3,032,000	$ 3,332,000		3,032,000	3,032,000	3,332,000
Health claims [Member]
Loss Contingencies [Line Items]
Threshold for claims to be insured by third party insurers							250,000
Accrued liabilities for uninsured portion of claims			800,000	950,000		800,000	800,000	950,000
Workers compensation auto and general liability claims [Member]
Loss Contingencies [Line Items]
Threshold for claims to be insured by third party insurers							750,000
Accrued liabilities for uninsured portion of claims			$ 1,891,000	$ 2,467,000		$ 1,891,000	$ 1,891,000	$ 2,467,000

Commitments and Contingencies - Future Minimum Payments Under Non-cancelable Operating Leases (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2017	$ 9,310
2018	6,128
2019	4,724
2020	3,805
2021	3,342
Thereafter	9,780
Operating Leases, Future Minimum Payments Due	$ 37,089

Supplemental Selected Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 137,083	$ 104,554	$ 115,315	$ 114,544	$ 150,587	$ 154,170	$ 163,644	$ 208,464	$ 471,496	$ 676,865	$ 1,118,416
Operating Income (loss)	(8,198)	(15,055)	(15,135)	(18,825)	(94,282)	(9,263)	(1,682)	6,128	(57,213)	(99,099)	130,596
Net income (loss)	$ (57)	$ (13,451)	$ (13,904)	$ (13,300)	$ (83,096)	$ (4,471)	$ (4,254)	$ 993	$ (40,712)	$ (90,828)	$ 102,278
Net income (loss) (in dollars per share)	$ 0.00	$ (0.16)	$ (0.17)	$ (0.16)	$ (1.00)	$ (0.05)	$ (0.05)	$ 0.01	$ (0.49)	$ (1.10)	$ 1.23
Net income (loss) (in dollars per share)	$ 0.00	$ (0.16)	$ (0.17)	$ (0.16)	$ (1.00)	$ (0.05)	$ (0.05)	$ 0.01	$ (0.49)	$ (1.10)	$ 1.07

Supplemental Selected Quarterly Financial Data (Unaudited) (Details Textual) - USD ($) $ in Thousands		3 Months Ended				12 Months Ended
	Nov. 01, 2015	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Loss Contingencies [Line Items]
Inventory write-down						$ 4,075	$ 2,163
Asset impairment charges						12,523	75,508	$ 0
Impairment of Long-Lived Assets Held-for-use						4,286	2,625
Goodwill, impairment loss						3,104	70,720
Fluids systems [Member]
Loss Contingencies [Line Items]
Inventory write-down							2,600
Asset impairment charges	$ 2,200
Goodwill, impairment loss						70,700	70,720
Asia Pacific [Member] \| Fluids systems [Member]
Loss Contingencies [Line Items]
Inventory write-down		$ 2,600
Asset impairment charges				$ 6,900
Impairment of Long-Lived Assets Held-for-use				3,800
Goodwill, impairment loss				$ 3,100
Uruguay [Member] \| Fluids systems [Member]
Loss Contingencies [Line Items]
Exit costs		$ 2,000	$ 2,500
Impairment of Long-Lived Assets Held-for-use						500
Asset write downs and litigation settlement						15,500	75,500
Uruguay [Member] \| Corporate office [Member]
Loss Contingencies [Line Items]
Asset write downs and litigation settlement						$ 14,800	$ 80,500
Settled litigation [Member] \| Unfavorable regulatory action [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount					$ (5,000)