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Document And Entity Information - shares	3 Months Ended
Document And Entity Information - shares	Mar. 31, 2018	Apr. 25, 2018
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-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding (in shares)		89,310,403

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 59,938	$ 56,352
Receivables, net	267,179	265,866
Inventories	189,109	165,336
Prepaid expenses and other current assets	16,502	17,483
Total current assets	532,728	505,037
Property, plant and equipment, net	315,552	315,320
Goodwill	44,397	43,620
Other intangible assets, net	28,906	30,004
Deferred tax assets	3,389	4,753
Other assets	3,752	3,982
Total assets	928,724	902,716
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current debt	1,391	1,518
Accounts payable	107,601	88,648
Accrued liabilities	38,880	68,248
Total current liabilities	147,872	158,414
Long-term debt, less current portion	185,635	158,957
Deferred tax liabilities	36,978	31,580
Other noncurrent liabilities	8,024	6,285
Total liabilities	378,509	355,236
Commitments and contingencies (Note 8)
Stockholders' Equity
Common stock, $0.01 par value, 200,000,000 shares authorized and 104,635,290 and 104,571,839 shares issued, respectively	1,046	1,046
Paid-in capital	606,491	603,849
Accumulated other comprehensive loss	(53,885)	(53,219)
Retained earnings	123,743	123,375
Treasury stock, at cost; 15,318,800 and 15,366,504 shares, respectively	(127,180)	(127,571)
Total stockholders’ equity	550,215	547,480
Total liabilities and stockholders' equity	$ 928,724	$ 902,716

Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
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)	104,635,290	104,571,839
Treasury stock, shares (in shares)	15,318,800	15,366,504

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating Income (Loss) [Abstract]
Revenues	$ 227,293	$ 158,691
Cost of revenues	186,455	129,590
Selling, general and administrative expenses	26,954	25,397
Other operating (income) loss, net	46	(42)
Operating income	13,838	3,746
Foreign currency exchange loss	225	392
Interest expense, net	3,300	3,218
Income from operations before income taxes	10,313	136
Provision for income taxes	3,091	1,119
Net income (loss)	$ 7,222	$ (983)
Income (loss) per common share - basic (in dollars per share)	$ 0.08	$ (0.01)
Income (loss) per common share - diluted (in dollars per share)	$ 0.08	$ (0.01)

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 7,222	$ (983)
Foreign currency translation adjustments (net of tax effect of $499 and $0)	(666)	2,555
Comprehensive income	$ 6,556	$ 1,572

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustments, tax	$ 499	$ 0

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Treasury Stock
Beginning balance at Dec. 31, 2016	$ 500,543	$ 998	$ 558,966	$ (63,208)	$ 129,873	$ (126,086)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(983)				(983)
Employee stock options, restricted stock and employee stock purchase plan	442	1	202		(186)	425
Stock-based compensation expense	2,836		2,836
Foreign currency translation	2,555			2,555
Ending balance at Mar. 31, 2017	505,393	999	562,004	(60,653)	128,704	(125,661)
Beginning balance at Dec. 31, 2017	547,480	1,046	603,849	(53,219)	123,375	(127,571)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of accounting changes	(6,764)
Net income (loss)	7,222				7,222
Employee stock options, restricted stock and employee stock purchase plan	654	0	353		(90)	391
Stock-based compensation expense	2,289		2,289
Foreign currency translation	(666)			(666)
Ending balance at Mar. 31, 2018	$ 550,215	$ 1,046	$ 606,491	$ (53,885)	$ 123,743	$ (127,180)

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ 7,222	$ (983)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operations:
Depreciation and amortization	11,271	9,387
Stock-based compensation expense	2,289	2,836
Provision for deferred income taxes	381	(2,545)
Net provision for doubtful accounts	341	666
Gain on sale of assets	(383)	(847)
Amortization of original issue discount and debt issuance costs	1,309	1,330
Change in assets and liabilities:
Increase in receivables	(5,928)	(23,019)
Increase in inventories	(17,841)	(829)
Decrease in other assets	129	521
Increase (decrease) in accounts payable	18,511	(1,692)
Increase (decrease) in accrued liabilities and other	(17,168)	3,731
Net cash provided by (used in) operating activities	133	(11,444)
Cash flows from investing activities:
Capital expenditures	(10,696)	(7,291)
Refund of proceeds from sale of a business	(13,974)	0
Proceeds from sale of property, plant and equipment	575	288
Net cash used in investing activities	(24,095)	(7,003)
Cash flows from financing activities:
Borrowings on lines of credit	107,156	0
Payments on lines of credit	(81,224)	0
Debt issuance costs	0	(157)
Proceeds from employee stock plans	353	211
Purchases of treasury stock	(42)	(48)
Other financing activities	(545)	(371)
Net cash provided by (used in) financing activities	25,698	(365)
Effect of exchange rate changes on cash	812	846
Net increase (decrease) in cash, cash equivalents, and restricted cash	2,548	(17,966)
Cash, cash equivalents, and restricted cash at beginning of period	65,460	95,299
Cash, cash equivalents, and restricted cash at end of period	$ 68,008	$ 77,333

Basis of Presentation and Significant Accounting Policies

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation and Significant Accounting Policies

The accompanying unaudited condensed consolidated financial statements of Newpark Resources, Inc. and our wholly-owned subsidiaries, which we refer to as “we,” “our” or “us,” have been prepared in accordance with Rule 10-01 of Regulation S-X for interim financial statements required to be filed with the Securities and Exchange Commission (“SEC”), and do not include all information and footnotes required by the accounting principles generally accepted in the United States (“U.S. GAAP”) for complete financial statements. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2017. Our fiscal year end is December 31 and our first quarter represents the three-month period ended March 31. The results of operations for the first quarter of 2018 are not necessarily indicative of the results to be expected for the entire year. Unless otherwise stated, all currency amounts are stated in U.S. dollars.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments necessary to present fairly our financial position as of March 31, 2018 and our results of operations and cash flows for the first quarter of 2018 and 2017. All adjustments are of a normal recurring nature. Our balance sheet at December 31, 2017 is derived from the audited consolidated financial statements at that date.

The preparation of financial statements in conformity with U.S. 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. For further information, see Note 1 in our Annual Report on Form 10-K for the year ended December 31, 2017.

New Accounting Pronouncements

Standards Adopted in 2018

Revenue from Contracts with Customers. In May 2014, the Financial Accounting Standards Board (“FASB”) amended the guidance for revenue from contracts with customers. 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. We adopted this new guidance as of January 1, 2018 using the modified retrospective transition method, and recorded a net reduction of $2.3 million to opening retained earnings to reflect the cumulative effect of adoption for contracts not completed as of December 31, 2017. Results for reporting periods beginning after December 31, 2017 are presented under the new guidance, while prior period amounts were not adjusted and continue to be reported in accordance with previous guidance.

The adoption of this new guidance primarily affected the timing of revenue recognition for drilling fluid additive products provided to customers in the delivery of an integrated fluid system in our U.S. drilling fluids business. Under previous guidance, we recognized revenue for these products upon shipment of materials and passage of title, with a reserve for estimated product returns. Under the new guidance, we recognize revenue for these products when they are utilized, which generally occurs at the time of consumption by the customer. There was no material impact on reported revenues for the first quarter of 2018 as a result of applying the new revenue recognition guidance.

The adoption of this guidance also requires additional disclosures for disaggregated revenues, which are included in Note 10. The following provides a summary of our significant accounting policies for revenue recognition under the new guidance for periods beginning after December 31, 2017.

Revenue Recognition - Fluids Systems. Revenues for drilling fluid additive products and engineering services, when provided to customers in the delivery of an integrated fluid system, are recognized as product revenues when utilized by the customer. Revenues for formulated liquid systems are recognized as product revenues when utilized or lost downhole while drilling. Revenues for equipment rental and other services provided to customers that are ancillary to the fluid system product delivery are recognized in rental and services revenues when the services are performed. For direct sales of drilling fluid products to customers, revenues are recognized upon shipment of materials and passage of title. An allowance for estimated product returns is maintained when the customer has the right to return unused products.

Revenue Recognition - Mats and Integrated Services. Revenues from the sale of mats are recognized when title passes to the customer, which is upon shipment or delivery, depending on the terms of the underlying sales contract. Revenues for rentals and services are generated from both fixed-price and unit-priced contracts, which are generally short-term in duration. The activities under these contracts include the installation and rental of matting systems for a period of time and services such as site planning and preparation, pit design, access road construction, environmental protection, fluids and spill storage/containment, erosion control, site restoration services and construction and drilling waste management. Rental and service revenues from these contracts are recognized as the specified services are performed. Revenues from any subsequent extensions to the rental agreements are recognized over the extension period.

For both segments, the amount of revenue we recognize for products sold and services performed reflects the consideration to which we expect to be entitled in exchange for such goods or services, which generally reflects the amount we have the right to invoice based on agreed upon unit rates. While billing requirements vary, many of our customer contracts require that billings occur periodically or at the completion of specified activities, even though our performance and right to consideration occurs throughout the contract. As such, we recognize revenue as performance is completed in the amount to which we have the right to invoice. We do not disclose the value of our unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which we recognize revenue for the amount to which we have the right to invoice for products sold and services performed.

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

Accounting for Income Taxes: Intra-Entity Transfers of Assets Other Than Inventory. In October 2016, the FASB amended the guidance related to the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. The new guidance requires an entity to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs, rather than the previous requirement to defer recognition of current and deferred income taxes for an intra-entity asset transfer until the asset had been sold to an outside party. 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. We adopted this new guidance as of January 1, 2018 using the modified retrospective transition method, and recorded a net reduction of $4.5 million to opening retained earnings to reflect the cumulative effect of adoption for the current and deferred income tax consequences of an intra-entity sale of mats from the U.S. to the U.K. completed prior to 2018.

The cumulative effect of the changes made to our consolidated balance sheet for the adoption of the new guidance for revenue from contracts with customers and the income tax consequences of intra-entity transfers of assets other than inventory were as follows:



(In thousands)	Balance at December 31, 2017	Impact of Adoption of New Revenue Recognition Guidance		Impact of Adoption of New Intra-Entity Transfers of Assets Guidance		Balance at January 1, 2018
Receivables, net	265,866	(8,441	)			257,425
Inventories	165,336	5,483				170,819
Deferred tax liabilities	31,580	(679	)	4,485		35,386
Retained earnings	123,375	(2,279	)	(4,485	)	116,611

Statement of Cash Flows. 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. We adopted this new guidance as of January 1, 2018. The adoption of this new guidance had no impact on our historical financial statements or related disclosures.

Standards Not Yet Adopted

Leases. In February 2016, the FASB issued updated guidance regarding accounting for leases. The new guidance 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. This guidance is effective for us in the first quarter of 2019 with early adoption permitted, and will be applied retrospectively as of the date of adoption, although the FASB is currently considering allowing the modified retrospective transition method. As part of our assessment work to date, we have formed an implementation work team and conducted a preliminary analysis of the new guidance. 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 and related disclosures.

Credit Losses. In June 2016, the FASB issued new guidance which requires financial assets measured at amortized cost basis to be presented at the net amount expected to be collected, including trade receivables. The new guidance requires an entity to estimate its lifetime “expected credit loss” for such assets at inception which will generally result in the earlier recognition of allowances for losses. This guidance is effective for us in the first quarter of 2020 with early adoption permitted in 2019, and will be applied using a modified retrospective transition method through a cumulative-effect adjustment to retained earnings as of the date of adoption. We are currently evaluating the impact of the new guidance on our consolidated financial statements and related disclosures.

Business Combinations

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Business Combinations

In November 2017, we acquired certain assets and assumed certain liabilities of Well Service Group, Inc. and Utility Access Solutions, Inc. (together, “WSG”). The purchase price for this acquisition was approximately $77.2 million, net of cash acquired, which included $44.8 million of cash conveyed at closing and the issuance of 3,361,367 shares of our common equity valued at $32.4 million. The results of operations of WSG are reported within the Mats and Integrated Services segment for the period subsequent to the date of the acquisition.

The WSG transaction has been recorded using the acquisition method of accounting and accordingly, assets acquired and liabilities assumed were recorded at their estimated fair values as of the acquisition date. The acquisition resulted in the preliminary recognition of $27.0 million in other intangible assets consisting primarily of customer relationships, technology and tradename. All of the other intangibles are finite-lived intangible assets that are preliminarily expected to be amortized over periods of 10 to 15 years with a weighted average amortization period of approximately 13 years. The excess of the total consideration was recorded as goodwill, which is deductible for tax purposes, and includes the value of the assembled workforce. The fair values of the identifiable assets acquired and liabilities assumed were based on the company's estimates and assumptions using various market, income and cost valuation approaches, which are classified within level 3 of the fair value hierarchy. While the initial purchase price allocation has been completed, the allocation of the purchase price is subject to change for a period of one year following the acquisition.

The following table summarizes the preliminary amounts recognized for the assets acquired and liabilities assumed as of the November 13, 2017 acquisition date, updated for changes to the purchase price allocation during the first quarter of 2018:



(In thousands)
Receivables	$	14,565
Inventories	3,207
Other current assets	114
Property, plant and equipment	15,718
Intangible assets	26,970
Total assets acquired	60,574

Current liabilities	7,283
Total liabilities assumed	7,283

Net assets purchased	53,291
Goodwill	23,864
Total purchase consideration	$	77,155

Cash conveyed at closing	44,750
Equity issued at closing	32,438
Due from seller	(33		)
Total purchase consideration	$	77,155

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.

Earnings Per Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Share

The following table presents the reconciliation of the numerator and denominator for calculating net income (loss) per share:



	First Quarter
(In thousands, except per share data)	2018		2017
Numerator
Net income (loss) - basic and diluted	$	7,222	$	(983	)

Denominator
Weighted average common shares outstanding - basic	89,094		84,153
Dilutive effect of stock options and restricted stock awards	2,637		—
Dilutive effect of 2021 Convertible Notes	—		—
Weighted average common shares outstanding - diluted	91,731		84,153

Net income (loss) per common share
Basic	$	0.08	$	(0.01	)
Diluted	$	0.08	$	(0.01	)

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



	First Quarter
(In thousands)	2018	2017
Stock options and restricted stock awards	1,654	8,083
2017 Convertible Notes	—	7,569
2021 Convertible Notes	—	—

The unsecured convertible senior notes due 2017 (“2017 Convertible Notes”) were repaid upon maturity in October 2017. The 2021 Convertible Notes (as defined in Note 6) will not impact the calculation of diluted net income per share unless the average price of our common stock, as calculated in accordance with the terms of the indenture governing the 2021 Convertible Notes, 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 2021 Convertible Notes as further described in Note 6. 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 per share.

Receivables

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Receivables

Receivables consisted of the following:



(In thousands)	March 31, 2018			December 31, 2017
Trade receivables:
Gross trade receivables	$	255,661		$	256,851
Allowance for doubtful accounts	(9,891		)	(9,457		)
Net trade receivables	245,770			247,394
Income tax receivables	10,110			6,905
Other receivables	11,299			11,567
Total receivables, net	$	267,179		$	265,866

Other receivables included $10.4 million and $10.8 million for value added, goods and service taxes related to foreign jurisdictions as of March 31, 2018 and December 31, 2017, respectively. As described in Note 1, the adoption of the new revenue recognition guidance resulted in a $8.4 million reduction in gross trade receivables as of January 1, 2018.

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

Inventories

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following:



(In thousands)	March 31, 2018		December 31, 2017
Raw materials:
Drilling fluids	$	146,021	$	123,022
Mats	1,511		1,419
Total raw materials	147,532		124,441
Blended drilling fluids components	32,510		30,495
Finished goods - mats	9,067		10,400
Total inventory	$	189,109	$	165,336

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. As described in Note 1, the adoption of the new revenue recognition guidance resulted in a $5.5 million increase in inventories as of January 1, 2018.

Financing Arrangements and Fair Value of Financial Instruments

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Financing Arrangements and Fair Value of Financial Instruments

Financing arrangements consisted of the following:



	March 31, 2018									December 31, 2017
(In thousands)	Principal Amount			Unamortized Discount and Debt Issuance Costs			Total Debt			Principal Amount			Unamortized Discount and Debt Issuance Costs			Total Debt
2021 Convertible Notes	$	100,000		$	(21,465	)	$	78,535		$	100,000		$	(22,643	)	$	77,357
ABL Facility	107,100			—			107,100			81,600			—			81,600
Other debt	1,391			—			1,391			1,518			—			1,518
Total debt	208,491			(21,465		)	187,026			183,118			(22,643		)	160,475
Less: current portion	(1,391		)	—			(1,391		)	(1,518		)	—			(1,518		)
Long-term debt	$	207,100		$	(21,465	)	$	185,635		$	181,600		$	(22,643	)	$	158,957

2021 Convertible Notes. In December 2016, we issued $100.0 million of unsecured convertible senior notes (“2021 Convertible Notes”) 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 April 26, 2018, 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. As of March 31, 2018, the carrying amount of the debt component was $78.5 million, which is net of the unamortized debt discount and issuance costs of $19.3 million and $2.1 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%.

Asset-Based Loan Facility. In May 2016, we entered into an asset-based revolving credit agreement which replaced our previous credit agreement. In October 2017, we entered into an Amended and Restated Credit Agreement (as amended, the "ABL Facility") which amended and restated the prior asset-based revolving credit agreement. The ABL Facility provides financing of up to $150.0 million available for borrowings (inclusive of letters of credit) and can be increased up to a maximum capacity of $225.0 million, subject to certain conditions. As of March 31, 2018, our total borrowing base availability under the ABL Facility was $150.0 million, of which $107.1 million was drawn, resulting in remaining availability of $42.9 million.

The ABL Facility terminates on October 17, 2022; however, the ABL Facility has a springing maturity date that will accelerate the maturity of the ABL Facility to September 1, 2021 if, prior to such date, the 2021 Convertible Notes have not either been repurchased, redeemed, converted or we have not provided sufficient funds to repay the 2021 Convertible Notes 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 2021 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.

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 175 to 275 basis points for LIBOR borrowings, and 75 to 175 basis points for base rate borrowings, based on the ratio of debt to consolidated EBITDA as defined in the ABL Facility. As of March 31, 2018, the applicable margin for borrowings under our ABL Facility was 200 basis points with respect to LIBOR borrowings and 100 basis points with respect to base rate borrowings. The weighted average interest rate for the ABL Facility was 3.8% at March 31, 2018. In addition, we are required to pay a commitment fee on the unused portion of the ABL Facility ranging from 25 to 37.5 basis points, based on the ratio of debt to consolidated EBITDA, as defined in the ABL Facility. The applicable commitment fee as of March 31, 2018 was 37.5 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 $22.5 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, India and Canada maintain local credit arrangements consisting primarily of lines of credit which are renewed on an annual basis. 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. We had $1.4 million and $1.0 million, respectively, outstanding under these arrangements at March 31, 2018 and December 31, 2017.

At March 31, 2018, we had letters of credit issued and outstanding of $5.9 million that are collateralized by $6.6 million in restricted cash. Additionally, our foreign operations had $21.5 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 $1.5 million in restricted cash.

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 2021 Convertible Notes, approximated their fair values at March 31, 2018 and December 31, 2017. The estimated fair value of our 2021 Convertible Notes was $119.3 million at March 31, 2018 and $127.3 million at December 31, 2017, based on quoted market prices at these respective dates.

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The U.S. Tax Cuts and Jobs Act (“Tax Act”) was enacted on December 22, 2017 resulting in broad and complex changes to U.S. income tax law. The Tax Act includes a one-time transition tax in 2017 on accumulated foreign subsidiary earnings not previously subject to U.S. income tax, reduces the U.S. corporate statutory tax rate from 35% to 21% effective January 1, 2018, generally eliminates U.S. federal income tax on dividends from foreign subsidiaries, creates new tax on certain foreign-sourced earnings, makes other changes to limit certain deductions and changes rules on how certain tax credits and net operating loss carryforwards can be utilized. Due to the timing of the enactment and the complexity involved in applying the provisions of the Tax Act, we made reasonable estimates of the effects and recorded provisional amounts in our 2017 financial statements. As we finalize the necessary data, and interpret the Tax Act and any additional guidance issued by the U.S. Treasury Department, the United States Internal Revenue Service (“IRS”), or other standard-setting bodies, we may make adjustments to these provisional amounts during 2018. Provisional amounts for the following income tax effects of the Tax Act were recorded as of December 31, 2017 and are subject to change during 2018. We have not made any significant measurement-period adjustments related to these items during the first quarter of 2018. However, we are continuing to gather additional information to complete our accounting for these items and may make adjustments to the provisional amounts during 2018. One-time transition tax The Tax Act requires us to pay U.S. income taxes on accumulated foreign subsidiary earnings not previously subject to U.S. income tax at a rate of 15.5% to the extent of foreign cash and certain other net current assets and 8% on the remaining earnings. We recorded a provisional amount in 2017 for our one-time transitional tax liability and income tax expense of $6.9 million based on estimates of the effects of the Tax Act. We continue to analyze the significant data from our foreign subsidiaries in connection with the completion of our 2017 income tax returns. Taxes on repatriation of foreign earnings Prior to the Tax Act, we considered the unremitted earnings in our non-US subsidiaries held directly by a U.S. parent to be indefinitely reinvested and, accordingly, had not provided any deferred income taxes. As a result of the Tax Act, we now intend to pursue repatriation of unremitted earnings in our non-US subsidiaries held directly by a U.S. parent to the extent that such earnings have been included in the one-time transition tax discussed above, and subject to cash requirements to support the strategic objectives of the non-US subsidiary. As such, we recorded a provisional amount of $7.0 million in 2017 for the estimated liability and income tax expense for any U.S. federal or state income taxes or additional foreign withholding taxes related to repatriation of such earnings. In addition, in 2017 we recognized certain foreign tax credits of $5.5 million in the U.S. related to the provisional accounting for taxes on repatriation of foreign earnings, however, we also recognized a full valuation allowance related to such tax assets as it is more likely than not that these assets will not be realized. The provisional amounts recorded in 2017 may change as we finalize the analysis of these items during 2018. In 2018, our income tax provision includes the estimated liability and income tax expense for any U.S. federal or state income taxes from the new tax on certain foreign-sourced earnings as well as any additional foreign withholding taxes related to future repatriation of current year earnings in our non-US subsidiaries held directly by a U.S. parent. Deferred tax effects The Tax Act reduced the U.S. corporate statutory tax rate from 35% to 21% for years after 2017. Accordingly, we remeasured our U.S. net deferred tax liabilities as of December 31, 2017 to reflect the reduced rate that will apply in future periods when those deferred taxes are settled or realized. We recognized a provisional deferred tax benefit in 2017 of $17.4 million to reflect the reduced U.S. tax rate on our estimated U.S. net deferred tax liabilities. Although the tax rate reduction is known, we have not completed our analysis of the effect of the Tax Act on the underlying deferred taxes for the items discussed above, and as such, the amounts recorded as of December 31, 2017 are provisional. The net tax benefit recognized in 2017 related to the Tax Act was $3.4 million. As we complete our analysis of the Tax Act and incorporate additional guidance that may be issued by the U.S. Treasury Department, the IRS or other standard-setting bodies, we may identify additional effects not reflected as of December 31, 2017. Those adjustments may materially impact our provision for income taxes and effective tax rate in the period in which the adjustments are made. The accounting for the tax effects of the Tax Act will be completed in 2018. The provision for income taxes was $3.1 million for the first quarter of 2018 compared to $1.1 million for the first quarter of 2017. The impact of the Tax Act on our effective tax rate in future periods will depend in large part on the relative contribution of our domestic earnings and finalization of the provisional accounting for the Tax Act in 2018. The 2017 effective tax rate was negatively impacted by pre-tax losses in certain international jurisdictions, most notably Australia, and non-deductible expenses relative to the amount of pre-tax income. 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. During the second quarter of 2017, we received a Revenue Agent Report from the IRS disallowing a deduction claimed on our 2015 tax return associated with the forgiveness of certain inter-company balances due from our Brazilian subsidiary and assessing tax due of approximately $3.9 million. We submitted our response to the IRS in the third quarter of 2017, with the tax appeals process scheduled to begin in June 2018. We believe our tax position is properly reported in accordance with applicable U.S. tax laws and regulations and intend to vigorously defend our position through the tax appeals process. Following an audit in 2015, the treasury authority in Mexico issued a tax assessment (inclusive of interest and penalties) in the amount of 60 million Pesos (approximately $3.3 million) to our Mexico subsidiary primarily in connection with the export of mats from Mexico which took place in 2010. The mats that are the subject of this assessment were owned by a U.S. subsidiary and leased to our Mexico subsidiary for matting projects in the Mexican market. In 2010, we made the decision to move these mats out of Mexico to markets with higher demand. The Mexican treasury authority determined the export of the mats was the equivalent of a sale, and assessed taxes on the gross declared value of the exported mats. We retained outside legal counsel and filed administrative appeals with the treasury authority, but we were notified on April 13, 2018, that the last administrative appeal had been rejected. We plan to file an appeal in the Tax Court, which will require that we post a bond in the amount of the assessed taxes (plus additional interest and penalties). We are in the process of preparing the appeal and securing the bond. We believe our tax position is properly reported in accordance with applicable tax laws and regulations in Mexico and intend to vigorously defend our position through the tax appeals process. We are also under examination by various tax authorities in other countries, and certain foreign jurisdictions have challenged the amounts of taxes due for certain tax periods. These audits are in various stages of completion. We fully cooperate with all audits, but defend existing positions vigorously. 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.

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	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. While the outcome of litigation or other proceedings against us cannot be predicted with certainty, management does not consider it reasonably possible that a loss resulting from such litigation or other proceedings, in excess of any amounts accrued or covered by insurance, has been incurred that is expected to have a material adverse impact on our consolidated financial statements. Escrow Claims Related to the Sale of the Environmental Services Business Under the terms of the March 2014 sale of our previous Environmental Services business to Ecoserv, LLC (“Ecoserv”), $8.0 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 purchase/sale agreement. In December 2014, we received a letter from Ecoserv asserting that we had breached certain representations and warranties contained in the purchase/sale agreement, including failing to disclose operational problems and service work performed on injection/disposal wells and increased barge rental costs. The letter indicated that Ecoserv expected the damages associated with these claims to exceed the escrow amount. In July 2015 we filed an action against Ecoserv in state district court in Harris County, Texas, seeking release of the escrow funds. Thereafter, Ecoserv filed a counterclaim seeking recovery in excess of the escrow funds based on the alleged breach of representations and covenants in the purchase/sale agreement. Ecoserv also alleged that we committed fraud in connection with the March 2014 transaction. Following commencement of the trial in December 2017, we reached a settlement agreement with Ecoserv in the first quarter of 2018, under which Ecoserv received $22.0 million in cash, effectively reducing the net sales price of the Environmental Services business by such amount in exchange for dismissal of the pending claims in the lawsuit, and release of any future claims related to the March 2014 transaction. As a result of the settlement, we recognized a charge to discontinued operations in the fourth quarter of 2017 for $22.0 million ($17.4 million net of tax) to reduce the previously recognized gain from the sale of the Environmental Services business. The reduction in sales price was funded in the first quarter of 2018 with a cash payment of $14.0 million and release of the $8.0 million that had been held in escrow since the March 2014 transaction. In March 2018, the lawsuit was dismissed with prejudice. Litigation expenses related to this matter are included in corporate office expenses in operating income.

Supplemental Disclosures to the Statements of Cash Flows

3 Months Ended

Mar. 31, 2018

Supplemental Cash Flow Elements [Abstract]

Supplemental Disclosures to the Statements of Cash Flows

Supplemental disclosures to the statements of cash flows are presented below:



	First Quarter
(In thousands)	2018		2017
Cash paid for:
Income taxes (net of refunds)	$	4,073	$	1,845
Interest	$	895	$	163

Cash, cash equivalents, and restricted cash on the consolidated statements of cash flows consisted of the following:



(In thousands)	March 31, 2018		December 31, 2017
Cash and cash equivalents	$	59,938	$	56,352
Restricted cash (included in other current assets)	8,070		9,108
Cash, cash equivalents, and restricted cash	$	68,008	$	65,460

Segment Data

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Segment Data

Summarized operating results for our reportable segments are shown in the following table (net of inter-segment transfers):



	First Quarter
(In thousands)	2018			2017
Revenues
Fluids systems	$	177,379		$	136,050
Mats and integrated services	49,914			22,641
Total revenues	$	227,293		$	158,691

Operating income (loss)
Fluids systems	$	10,477		$	6,352
Mats and integrated services	12,086			6,402
Corporate office	(8,725		)	(9,008		)
Operating income	$	13,838		$	3,746

The following table presents further disaggregated revenues for the Fluids Systems segment:



	First Quarter
(In thousands)	2018		2017
United States	$	92,469	$	65,620
Canada	23,072		19,655
Total North America	115,541		85,275
Latin America	7,914		9,060
Total Western Hemisphere	123,455		94,335

EMEA	51,435		40,508
Asia Pacific	2,489		1,207
Total Eastern Hemisphere	53,924		41,715

Total Fluids Systems revenues	$	177,379	$	136,050

The following table presents further disaggregated revenues for the Mats and Integrated Services segment:



	First Quarter
(In thousands)	2018		2017
Mat rental and services	$	40,116	$	19,361
Mat sales	9,798		3,280
Total Mats and Integrated Services revenues	$	49,914	$	22,641

The Mats and Integrated Services segment includes the impact of the WSG acquisition completed in November 2017. Mats and Integrated Services segment revenues from non-E&P markets represented approximately 50% and 56% of our segment revenues for the first quarter of 2018 and 2017, respectively.

Basis of Presentation and Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Change in Accounting Estimates

New Accounting Pronouncements

Standards Adopted in 2018

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



(In thousands)	Balance at December 31, 2017	Impact of Adoption of New Revenue Recognition Guidance		Impact of Adoption of New Intra-Entity Transfers of Assets Guidance		Balance at January 1, 2018
Receivables, net	265,866	(8,441	)			257,425
Inventories	165,336	5,483				170,819
Deferred tax liabilities	31,580	(679	)	4,485		35,386
Retained earnings	123,375	(2,279	)	(4,485	)	116,611

Standards Not Yet Adopted

Revenue from Contracts with Customers

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

Basis of Presentation and Significant Accounting Policies Basis of Presentation and Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Cumulative effect of changes for adoption of new guidance



(In thousands)	Balance at December 31, 2017	Impact of Adoption of New Revenue Recognition Guidance		Impact of Adoption of New Intra-Entity Transfers of Assets Guidance		Balance at January 1, 2018
Receivables, net	265,866	(8,441	)			257,425
Inventories	165,336	5,483				170,819
Deferred tax liabilities	31,580	(679	)	4,485		35,386
Retained earnings	123,375	(2,279	)	(4,485	)	116,611

Business Combinations Business Combinations (Tables)

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Schedule of preliminary amounts recognized for assets acquired and liabilities assumed



(In thousands)
Receivables	$	14,565
Inventories	3,207
Other current assets	114
Property, plant and equipment	15,718
Intangible assets	26,970
Total assets acquired	60,574

Current liabilities	7,283
Total liabilities assumed	7,283

Net assets purchased	53,291
Goodwill	23,864
Total purchase consideration	$	77,155

Cash conveyed at closing	44,750
Equity issued at closing	32,438
Due from seller	(33		)
Total purchase consideration	$	77,155

Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

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 net income (loss) per share:



	First Quarter
(In thousands, except per share data)	2018		2017
Numerator
Net income (loss) - basic and diluted	$	7,222	$	(983	)

Denominator
Weighted average common shares outstanding - basic	89,094		84,153
Dilutive effect of stock options and restricted stock awards	2,637		—
Dilutive effect of 2021 Convertible Notes	—		—
Weighted average common shares outstanding - diluted	91,731		84,153

Net income (loss) per common share
Basic	$	0.08	$	(0.01	)
Diluted	$	0.08	$	(0.01	)

Schedule of diluted net income (loss) per share



	First Quarter
(In thousands)	2018	2017
Stock options and restricted stock awards	1,654	8,083
2017 Convertible Notes	—	7,569
2021 Convertible Notes	—	—

Receivables (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Schedule of accounts and other receivables

Receivables consisted of the following:



(In thousands)	March 31, 2018			December 31, 2017
Trade receivables:
Gross trade receivables	$	255,661		$	256,851
Allowance for doubtful accounts	(9,891		)	(9,457		)
Net trade receivables	245,770			247,394
Income tax receivables	10,110			6,905
Other receivables	11,299			11,567
Total receivables, net	$	267,179		$	265,866

Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consisted of the following:



(In thousands)	March 31, 2018		December 31, 2017
Raw materials:
Drilling fluids	$	146,021	$	123,022
Mats	1,511		1,419
Total raw materials	147,532		124,441
Blended drilling fluids components	32,510		30,495
Finished goods - mats	9,067		10,400
Total inventory	$	189,109	$	165,336

Financing Arrangements and Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Schedule of financing arrangements

Financing arrangements consisted of the following:



	March 31, 2018									December 31, 2017
(In thousands)	Principal Amount			Unamortized Discount and Debt Issuance Costs			Total Debt			Principal Amount			Unamortized Discount and Debt Issuance Costs			Total Debt
2021 Convertible Notes	$	100,000		$	(21,465	)	$	78,535		$	100,000		$	(22,643	)	$	77,357
ABL Facility	107,100			—			107,100			81,600			—			81,600
Other debt	1,391			—			1,391			1,518			—			1,518
Total debt	208,491			(21,465		)	187,026			183,118			(22,643		)	160,475
Less: current portion	(1,391		)	—			(1,391		)	(1,518		)	—			(1,518		)
Long-term debt	$	207,100		$	(21,465	)	$	185,635		$	181,600		$	(22,643	)	$	158,957

Supplemental Disclosures to the Statements of Cash Flows (Tables)

3 Months Ended

Mar. 31, 2018

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

Supplemental disclosures to the statements of cash flows are presented below:



	First Quarter
(In thousands)	2018		2017
Cash paid for:
Income taxes (net of refunds)	$	4,073	$	1,845
Interest	$	895	$	163

Cash, cash equivalents and restricted cash

Cash, cash equivalents, and restricted cash on the consolidated statements of cash flows consisted of the following:



(In thousands)	March 31, 2018		December 31, 2017
Cash and cash equivalents	$	59,938	$	56,352
Restricted cash (included in other current assets)	8,070		9,108
Cash, cash equivalents, and restricted cash	$	68,008	$	65,460

Segment Data (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Schedule of operating results for reportable segments

Summarized operating results for our reportable segments are shown in the following table (net of inter-segment transfers):



	First Quarter
(In thousands)	2018			2017
Revenues
Fluids systems	$	177,379		$	136,050
Mats and integrated services	49,914			22,641
Total revenues	$	227,293		$	158,691

Operating income (loss)
Fluids systems	$	10,477		$	6,352
Mats and integrated services	12,086			6,402
Corporate office	(8,725		)	(9,008		)
Operating income	$	13,838		$	3,746

Schedule of disaggregated revenues, geographic

The following table presents further disaggregated revenues for the Fluids Systems segment:



	First Quarter
(In thousands)	2018		2017
United States	$	92,469	$	65,620
Canada	23,072		19,655
Total North America	115,541		85,275
Latin America	7,914		9,060
Total Western Hemisphere	123,455		94,335

EMEA	51,435		40,508
Asia Pacific	2,489		1,207
Total Eastern Hemisphere	53,924		41,715

Total Fluids Systems revenues	$	177,379	$	136,050

Schedule of disaggregated revenues, segments

The following table presents further disaggregated revenues for the Mats and Integrated Services segment:



	First Quarter
(In thousands)	2018		2017
Mat rental and services	$	40,116	$	19,361
Mat sales	9,798		3,280
Total Mats and Integrated Services revenues	$	49,914	$	22,641

Basis of Presentation and Significant Accounting Policies - New Guidance (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Receivables, net	$ 267,179	$ 257,425	$ 265,866
Inventories	189,109	170,819	165,336
Deferred tax liabilities	36,978	35,386	31,580
Retained earnings	$ 123,743	$ 116,611	123,375
ASU 2014-09 \| Difference between revenue guidance in effect before and after Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Receivables, net			(8,400)
Inventories			5,500
Deferred tax liabilities			(679)
Retained earnings			(2,279)
ASU 2016-16
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred tax liabilities			4,485
Retained earnings			$ (4,500)

Business Combinations (Details) - Well Service Group, Inc. and Utility Access Solutions, Inc. (WSG) $ in Thousands	Nov. 13, 2017 USD ($) shares
Business Acquisition [Line Items]
Business combination, consideration transferred	$ 77,155
Cash conveyed at closing	$ 44,750
Business acquisition, common shares issuance (in shares) \| shares	3,361,367
Equity issued at closing	$ 32,438
Intangible assets acquired	$ 27,000
Finite-lived intangible assets acquired, weighted-average amortization period	13 years
Minimum
Business Acquisition [Line Items]
Finite-lived intangible assets acquired, amortization period	10 years
Maximum
Business Acquisition [Line Items]
Finite-lived intangible assets acquired, amortization period	15 years

Business Combinations - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Nov. 13, 2017	Mar. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill		$ 44,397	$ 43,620
Well Service Group, Inc. and Utility Access Solutions, Inc. (WSG)
Business Acquisition [Line Items]
Receivables	$ 14,565
Inventories	3,207
Other current assets	114
Property, plant and equipment	15,718
Intangible assets	26,970
Total assets acquired	60,574
Current liabilities	7,283
Total liabilities assumed	7,283
Net assets purchased	53,291
Goodwill	23,864
Total purchase consideration	77,155
Cash conveyed at closing	44,750
Equity issued at closing	32,438
Due from seller	(33)
Total purchase consideration	$ 77,155

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income (loss)	$ 7,222	$ (983)
Basic - weighted average common shares outstanding (in shares)	89,094	84,153
Dilutive effect of stock options and restricted stock awards (in shares)	2,637	0
Weighted average common shares outstanding - diluted (in shares)	91,731	84,153
Income (loss) per common share - basic (in dollars per share)	$ 0.08	$ (0.01)
Income (loss) per common share - diluted (in dollars per share)	$ 0.08	$ (0.01)
Stock options and restricted stock excluded from calculation of diluted earnings per share because anti-dilutive for the period (in shares)	1,654	8,083
Convertible debt \| Convertible Notes due 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options and restricted stock excluded from calculation of diluted earnings per share because anti-dilutive for the period (in shares)	0	7,569
Convertible debt \| Convertible Notes due 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive effect of Convertible Notes (in shares)	0	0
Stock options and restricted stock excluded from calculation of diluted earnings per share because anti-dilutive for the period (in shares)	0	0
Senior notes \| Convertible Notes due 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Debt instrument, convertible, conversion price (in dollars per share)	$ 9.33

Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Trade receivables:
Gross trade receivables	$ 255,661		$ 256,851
Allowance for doubtful accounts	(9,891)		(9,457)
Net trade receivables	245,770		247,394
Income tax receivables	10,110		6,905
Other receivables	11,299		11,567
Total receivables, net	$ 267,179	$ 257,425	$ 265,866

Receivables (Details Textual) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	$ 11,299		$ 11,567
Receivables, net	267,179	$ 257,425	265,866
Foreign
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	$ 10,400		10,800
ASU 2014-09 \| Difference between revenue guidance in effect before and after Topic 606
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, net			$ (8,400)

Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Inventory [Line Items]
Raw materials:	$ 147,532		$ 124,441
Total inventory	189,109	$ 170,819	165,336
Drilling fluids
Inventory [Line Items]
Raw materials:	146,021		123,022
Mats
Inventory [Line Items]
Raw materials:	1,511		1,419
Finished goods	9,067		10,400
Blended drilling fluids components
Inventory [Line Items]
Finished goods	$ 32,510		30,495
Difference between revenue guidance in effect before and after Topic 606 \| ASU 2014-09
Inventory [Line Items]
Total inventory			$ 5,500

Financing Arrangements and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt, gross	$ 208,491	$ 183,118
Unamortized discount and debt issuance costs	(21,465)	(22,643)
Long-term debt	187,026	160,475
Long-term debt, current maturities, gross	(1,391)	(1,518)
Unamortized discount and debt issuance costs, current	0	0
Long-term debt, current maturities	(1,391)	(1,518)
Long-term debt, excluding current maturities, gross	207,100	181,600
Unamortized discount and debt issuance costs, noncurrent	(21,465)	(22,643)
Long-term debt, excluding current maturities	185,635	158,957
Other Debt
Debt Instrument [Line Items]
Long-term debt, gross	1,391	1,518
Long-term debt	1,391	1,518
Senior notes \| Convertible Notes due 2021
Debt Instrument [Line Items]
Long-term debt, gross	100,000	100,000
Unamortized discount and debt issuance costs	(21,465)	(22,643)
Long-term debt	78,535	77,357
Revolving credit facility \| ABL Facility
Debt Instrument [Line Items]
Long-term debt, gross	107,100	81,600
Long-term debt	$ 107,100	$ 81,600

Financing Arrangements and Fair Value of Financial Instruments (Details Textual)	1 Months Ended	3 Months Ended	12 Months Ended
	May 31, 2016 USD ($)	Mar. 31, 2018 USD ($) $ / shares	Dec. 31, 2017 USD ($) trading_day shares	Oct. 31, 2017 USD ($)	May 12, 2016 USD ($)
Conversion price percentage			130.00%
Business day period			5 days
Consecutive trading day period			5 days
Percent threshold last reported sale price			98.00%
Long-term debt, excluding current maturities		$ 185,635,000	$ 158,957,000
Current debt		1,391,000	1,518,000
Restricted cash and cash equivalents, current		6,600,000
Foreign Operations
Current debt		1,400,000	$ 1,000,000
Restricted cash and cash equivalents, current		$ 1,500,000
Senior notes
Debt instrument, convertible, threshold trading days \| trading_day			20
Debt instrument, convertible, threshold consecutive trading days \| trading_day			30
Debt conversion, principal amount as basis for conversion rate			$ 1,000
Debt conversion, converted shares for basis principal (shares) \| shares			107.1381
Interest rate, effective percentage		11.30%
Convertible Notes due 2021 \| Senior notes
Debt instrument, face amount		$ 100,000,000
Interest rate, stated percentage			4.00%
Debt instrument, convertible, conversion price (in dollars per share) \| $ / shares		$ 9.33
Convertible debt, fair value		$ 119,300,000	$ 127,300,000
ABL Facility \| Federal Funds Rate
Base rate basis spread on variable rate	0.50%
ABL Facility \| London Interbank Offered Rate (LIBOR)
Base rate basis spread on variable rate	1.00%
Basis spread on variable rate		2.00%
ABL Facility \| Base Rate
Basis spread on variable rate		1.00%
ABL Facility \| Minimum \| London Interbank Offered Rate (LIBOR)
Basis spread on variable rate	1.75%
ABL Facility \| Minimum \| Base Rate
Basis spread on variable rate	0.75%
ABL Facility \| Maximum \| London Interbank Offered Rate (LIBOR)
Basis spread on variable rate	2.75%
ABL Facility \| Maximum \| Base Rate
Basis spread on variable rate	1.75%
ABL Facility \| Revolving credit facility
Maximum borrowing capacity				$ 225,000,000
Secured Debt			$ 107,100,000
Remaining borrowing capacity		$ 42,900,000
Fixed charge coverage ratio, amount	$ 25,000,000				$ 22,500,000.0
Debt, weighted average interest rate			3.80%
Unused capacity, commitment fee percentage		0.375%
Covenant terms acceleration of other indebtedness					$ 25,000,000
ABL Facility \| Revolving credit facility \| Minimum
Unused capacity, commitment fee percentage		0.25%
ABL Facility \| Revolving credit facility \| Maximum
Maximum borrowing capacity				$ 150,000,000.0
Unused capacity, commitment fee percentage		0.375%
Credit Agreement
Letters of credit outstanding, amount		$ 5,900,000
Credit Agreement \| Foreign Operations
Letters of credit outstanding, amount		21,500,000
Convertible debt, debt component
Debt issuance cost		2,100,000
Long-term debt, excluding current maturities		78,500,000
Unamortized debt discount		$ 19,300,000

Income Taxes (Details) $ in Thousands, $ in Millions	3 Months Ended			12 Months Ended
Income Taxes (Details) $ in Thousands, $ in Millions	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 MXN ($)
Income Tax Disclosure [Abstract]
Tax Cuts and Jobs Act of 2017, Transition tax liability and income tax expense				$ 6,900
Repatriation of foreign earnings				7,000
Tax Cuts and Jobs Act of 2017, foreign tax credit		$ 5,500		5,500
Tax Cuts and Jobs Act of 2017, deferred income tax expense (benefit)				$ (17,400)
Tax Cuts and Jobs Act of 2017, net tax benefit recognized		$ 3,400
Provision for income taxes	$ 3,091		$ 1,119
Income tax benefit, release of U.S. tax reserves					$ 3,900
Foreign tax authority \| Mexico Tax Authority
Income Tax Contingency [Line Items]
Income tax assessment					$ 3,300	$ 60

Commitments and Contingencies (Details Textual) - Ecoserv - Environmental services - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2014
Loss Contingencies [Line Items]
Escrow deposit			$ 8.0
Settled litigation
Loss Contingencies [Line Items]
Litigation settlement, awarded from other party		$ 22.0
Litigation settlement, awarded from other party, net of tax		$ 17.4
Litigation settlement, awarded to other party	$ 14.0

Supplemental Disclosures to the Statements of Cash Flows - Supplemental Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Income taxes (net of refunds)	$ 4,073	$ 1,845
Interest	$ 895	$ 163

Supplemental Disclosures to the Statements of Cash Flows - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Supplemental Cash Flow Elements [Abstract]
Cash and cash equivalents	$ 59,938	$ 56,352
Restricted cash (included in other current assets)	8,070	9,108
Cash, cash equivalents, and restricted cash	$ 68,008	$ 65,460	$ 77,333	$ 95,299

Segment Data - Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue, Major Customer [Line Items]
Revenues	$ 227,293	$ 158,691
Operating Income (Loss)	13,838	3,746
Operating segments \| Fluids systems
Revenue, Major Customer [Line Items]
Revenues	177,379	136,050
Operating Income (Loss)	10,477	6,352
Operating segments \| Mats and integrated services
Revenue, Major Customer [Line Items]
Revenues	49,914	22,641
Operating Income (Loss)	12,086	6,402
Corporate, non-segment \| Corporate office
Revenue, Major Customer [Line Items]
Operating Income (Loss)	$ (8,725)	$ (9,008)

Segment Data - Disaggregated Revenues, Geographic (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 227,293	$ 158,691
Operating segments \| Fluids systems
Disaggregation of Revenue [Line Items]
Revenues	177,379	136,050
Operating segments \| Fluids systems \| Western Hemisphere
Disaggregation of Revenue [Line Items]
Revenues	123,455	94,335
Operating segments \| Fluids systems \| North America
Disaggregation of Revenue [Line Items]
Revenues	115,541	85,275
Operating segments \| Fluids systems \| United States
Disaggregation of Revenue [Line Items]
Revenues	92,469	65,620
Operating segments \| Fluids systems \| Canada
Disaggregation of Revenue [Line Items]
Revenues	23,072	19,655
Operating segments \| Fluids systems \| Latin America
Disaggregation of Revenue [Line Items]
Revenues	7,914	9,060
Operating segments \| Fluids systems \| Eastern Hemisphere
Disaggregation of Revenue [Line Items]
Revenues	53,924	41,715
Operating segments \| Fluids systems \| EMEA
Disaggregation of Revenue [Line Items]
Revenues	51,435	40,508
Operating segments \| Fluids systems \| Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues	$ 2,489	$ 1,207

Segment Data Segment Data - Disaggregated Revenues, Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 227,293	$ 158,691
Operating segments \| Mats and integrated services
Disaggregation of Revenue [Line Items]
Revenues	49,914	22,641
Operating segments \| Mats and integrated services \| Mat rental and services
Disaggregation of Revenue [Line Items]
Revenues	40,116	19,361
Operating segments \| Mats and integrated services \| Mat sales
Disaggregation of Revenue [Line Items]
Revenues	$ 9,798	$ 3,280
Revenue from contract with customer \| Mats and integrated services
Disaggregation of Revenue [Line Items]
Concentration risk	50.00%	56.00%