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Document And Entity Information - shares	3 Months Ended
Document And Entity Information - shares	Mar. 31, 2014	Apr. 17, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	NEWPARK RESOURCES INC
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		84,852,299
Amendment Flag	false
Entity Central Index Key	0000071829
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Mar. 31, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q1

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2014	Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 130,187	$ 65,840
Receivables, net	276,082	268,529
Inventories	199,565	189,680
Deferred tax asset	11,750	11,272
Prepaid expenses and other current assets	15,034	11,016
Assets of discontinued operations		13,103
Total current assets	632,618	559,440
Property, plant and equipment, net	227,050	217,010
Goodwill	93,781	94,064
Other intangible assets, net	23,870	25,900
Other assets	9,813	6,086
Assets of discontinued operations		65,917
Total assets	987,132	968,417
LIABILITIES AND STOCKHOLDERS’ EQUITY
Short-term debt	15,759	12,867
Accounts payable	88,328	88,586
Accrued liabilities	65,196	46,341
Liabilities of discontinued operations		5,957
Total current liabilities	169,283	153,751
Long-term debt, less current portion	172,771	172,786
Deferred tax liability	26,235	27,060
Other noncurrent liabilities	11,288	11,026
Liabilities of discontinued operations		22,740
Total liabilities	379,577	387,363
Commitments and contingencies (Note 9)
Common stock, $0.01 par value, 200,000,000 shares authorized and 98,032,555 and 98,030,839 shares issued, respectively	980	980
Paid-in capital	507,820	504,675
Accumulated other comprehensive loss	(8,279)	(9,484)
Retained earnings	195,349	160,338
Treasury stock, at cost; 11,904,275 and 10,832,845 shares, respectively	(88,315)	(75,455)
Total stockholders’ equity	607,555	581,054
Total liabilities and stockholders' equity	$ 987,132	$ 968,417

Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares	Mar. 31, 2014	Dec. 31, 2013
Common stock par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	98,032,555	98,030,839
Treasury stock, shares	11,904,275	10,832,845

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues	$ 242,824	$ 267,923
Cost of revenues	196,560	220,735
Selling, general and administrative expenses	25,523	22,451
Other operating income, net	(16)	(124)
Operating income	20,757	24,861
Foreign currency exchange loss (gain)	54	(368)
Interest expense, net	2,920	2,520
Income from continuing operations before income taxes	17,783	22,709
Provision for income taxes	6,041	7,842
Income from continuing operations	11,742	14,867
Income from discontinued operations, net of tax	1,152	2,508
Gain from disposal of discontinued operations, net of tax	22,117
Net income	$ 35,011	$ 17,375
Income per common share -basic:
Income from continuing operations (in Dollars per share)	$ 0.14	$ 0.18
Income from discontinued operations (in Dollars per share)	0.27	0.03
Net income (in Dollars per share)	0.41	0.21
Income per common share -diluted:
Income from continuing operations (in Dollars per share)	0.13	0.16
Income from discontinued operations (in Dollars per share)	0.23	0.02
Net income (in Dollars per share)	$ 0.36	$ 0.18

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net income	$ 35,011	$ 17,375
Foreign currency translation adjustments	1,205	(2,764)
Comprehensive income	$ 36,216	$ 14,611

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

Condensed Consolidated Statements of Cash Flows [Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income	$ 35,011	$ 17,375
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	10,287	10,954
Stock-based compensation expense	2,840	1,973
Provision for deferred income taxes	(13,108)	534
Net provision for doubtful accounts	173	208
Gain on sale of a business	(33,974)
Gain on sale of assets	(362)	(99)
Change in assets and liabilities:
Increase in receivables	(1,080)	(20,969)
Increase in inventories	(9,229)	(1,280)
Increase in other assets	(3,858)	(2,382)
(Decrease) increase in accounts payable	(1,248)	4,179
Increase in accrued liabilities and other	18,142	4,747
Net cash provided by operating activities	3,594	15,240
Cash flows from investing activities:
Capital expenditures	(18,509)	(16,127)
Proceeds from sale of property, plant and equipment	754	213
Proceeds from sale of a business	89,167
Net cash provided by (used in) investing activities	71,412	(15,914)
Cash flows from financing activities:
Borrowings on lines of credit	47,562	71,102
Payments on lines of credit	(45,113)	(78,748)
Other financing activities	(13)	(38)
Proceeds from employee stock plans	34	3,808
Purchase of treasury stock	(13,123)
Net cash used in financing activities	(10,653)	(3,876)
Effect of exchange rate changes on cash	(6)	(586)
Net increase (decrease) in cash and cash equivalents	64,347	(5,136)
Cash and cash equivalents at beginning of year	65,840	46,846
Cash and cash equivalents at end of period	130,187	41,710
Cash paid for:
Income taxes (net of refunds)	9,500	4,294
Interest	$ 667	$ 331

Note 1 - Basis of Presentation and Significant Accounting Policies

3 Months Ended

Mar. 31, 2014

Disclosure Text Block [Abstract]

Basis of Presentation and Significant Accounting Policies [Text Block]

Note 1 – 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, 2013. 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 2014 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, 2014, the results of our operations for the first quarter of 2014 and 2013, and our cash flows for the first quarter of 2014 and 2013. All adjustments are of a normal recurring nature. Our balance sheet at December 31, 2013 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, 2013.

New Accounting Standards

In April 2014, the Financial Accounting Standards Board (“FASB”) issued updated guidance that changes the criteria for reporting discontinued operations including enhanced disclosure requirements. Under the new guidance, only disposals representing a strategic shift in operations should be presented as discontinued operations. Those strategic shifts should have a major effect on the organization´s operations and financial results. The new guidance is effective for us in the first quarter of 2015, however we do not expect the adoption to have a material effect on our consolidated financial statements.

Note 2 - Discontinued Operations

3 Months Ended

Mar. 31, 2014

Discontinued Operations and Disposal Groups [Abstract]

Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]

Note 2 – Discontinued Operations

On March 17, 2014, we completed the previously announced sale of our 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 $89.2 million in the first quarter of 2014, net of transaction related expenses. In addition, $8 million of the sale price was withheld in escrow associated with transaction representations, warranties and indemnities, and is expected to be released over the next two years. 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). All assets, liabilities and results of operations for this business have been reclassified to discontinued operations for all periods presented.

Summarized results of operations from discontinued operations are as follows:

	Three Months Ended March 31,
(In thousands)	2014		2013

Revenues	$	11,744	$	14,595

Income from discontinued operations before income taxes		1,770		3,508
Income from discontinued operations, net of tax		1,152		2,508
Gain from disposal of discontinued operations before income taxes		33,974		-
Gain from disposal of discontinued operations, net of tax		22,117		-

As of March 31, 2014, our reported accrued liabilities of $65.2 million, includes approximately $31 million of accrued income taxes payable, the majority of which is related to the sale of this business. Assets and liabilities of discontinued operations as of December 31, 2013 were as follows:

	December 31,
(In thousands)	2013

Receivables, net	$	11,915
Prepaid expenses and other current assets		1,188
Property, plant and equipment		62,333
Other assets		3,584
Assets of discontinued operations	$	79,020

Accounts payable	$	4,415
Other Accrued liabilities		1,542
Deferred tax liability		12,449
Other noncurrent liabilities		10,291
Liabilities of discontinued operations	$	28,697

- Definition

The entire disclosure for the facts and circumstances leading to the completed or expected disposal, manner and timing of disposal, the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the segment in which the disposal group was reported, and the classification (whether sold or classified as held for sale) and carrying value of the assets and liabilities comprising the disposal group. Includes all disposal groups, including those classified as components of the entity (discontinued operations).

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Note 3 - Earnings Per Share

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

Note 3 – Earnings per Share

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

	First Quarter
(In thousands, except per share data)	2014		2013

Basic EPS:
Income from continuing operations	$	11,742	$	14,867

Weighted average number of common shares outstanding		84,743		84,100

Basic income from continuing operations per common share	$	0.14	$	0.18


Diluted EPS:
Income from continuing operations	$	11,742	$	14,867
Assumed conversions of Senior Notes		1,261		1,250
Adjusted income from continuing operations	$	13,003	$	16,117

Weighted average number of common shares outstanding-basic		84,743		84,100
Add: Dilutive effect of stock options and restricted stock awards		1,674		1,572
Dilutive effect of Senior Notes		15,682		15,682

Diluted weighted average number of common shares outstanding		102,099		101,354

Diluted income from continuing operations per common share	$	0.13	$	0.16

Stock options excluded from calculation of diluted earnings per share because anti-dilutive for the period		627		592

For the first quarter of 2014 and 2013, we had weighted average dilutive stock options and restricted stock outstanding of approximately 5.0 million shares and 5.5 million shares, respectively. The resulting net effect of stock options and restricted stock were used in calculating diluted earnings per share for the period.

Note 4 - Acquisition

3 Months Ended

Mar. 31, 2014

Business Combinations [Abstract]

Business Combination Disclosure [Text Block]

Note 4 – Acquisition

In December 2013, we completed the acquisition of Terrafirma Roadways (“Terrafirma”), a provider of temporary roadways and worksites based in the United Kingdom, for total cash consideration of $6.8 million, net of cash acquired. Additional consideration up to £1.0 million ($1.6 million) may be payable based on earnings of the business over the 18-month period following the acquisition. Prior to the acquisition, Terrafirma had been operating as a partner to the Company since 2008, developing a rental business with DURA-BASE^® composite mats, primarily focused in the utility industry in the U.K.

The transaction has been recorded using the acquisition method of accounting and accordingly, assets acquired and liabilities assumed were recorded at their fair values as of the acquisition date. The excess of the total consideration, including projected additional consideration, was recorded as goodwill and includes the value of the assembled workforce. 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 amounts recognized for assets acquired and liabilities assumed as of the December 2013 acquisition date:

(In thousands)

Receivables, net	$	2,155
Property, plant and equipment, net		2,160
Goodwill		4,544
Other intangibles, net		4,528
Total assets acquired		13,387

Accounts payable		3,350
Short-term debt		284
Accrued liabilities		285
Deferred tax liability		1,092
Other noncurrent liabilities		1,600
Total liabilities assumed		6,611

Total cash conveyed at closing	$	6,776

Pro forma results of operation 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).

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Note 5 - Treasury Stock

3 Months Ended

Mar. 31, 2014

Stockholders' Equity Note [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

Note 5 – Treasury Stock

In April 2013, our Board of Directors approved a share repurchase program that authorizes the Company to purchase up to $50.0 million of its outstanding shares of common stock. In February 2014, our Board of Directors increased the total authorization of the program to $100.0 million, subject to completion of the Environmental Services divesture. These purchases are funded with a combination of cash generated from operations, the sale of the Environmental Services business and borrowings under the Company’s revolving credit facility. The repurchase program has no specific term. The Company may repurchase shares in the open market or as otherwise determined by management, subject to market conditions, business opportunities and other factors. As part of the share repurchase program, the Company’s management has been authorized to establish trading plans under Rule 10b5-1 of the Securities Exchange Act of 1934.

During the first quarter of 2014, 1,095,413 shares were repurchased for an average price of approximately $11.84 per share, including commissions, leaving $80.3 million remaining under the program. All of the shares repurchased are held as treasury stock. We record treasury stock purchases under the cost method whereby the entire cost of the acquired stock is recorded as treasury stock.

- 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.

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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
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-Paragraph 1
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

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-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph d
-Article 4

Reference 15: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 16: http://www.xbrl.org/2003/role/presentationRef
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-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 17: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 18: http://www.xbrl.org/2003/role/presentationRef
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-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

Note 6 - Receivables

3 Months Ended

Mar. 31, 2014

Receivables [Abstract]

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

Note 6 – Receivables

Receivables - Receivables consist of the following:

	March 31,			December 31,
(In thousands)	2014			2013

Gross trade receivables	$	254,376		$	252,168
Allowance for doubtful accounts		(4,204	)		(4,142	)
Net trade receivables		250,172			248,026

Other receivables		25,910			20,503

Total receivables, net	$	276,082		$	268,529

- 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

Note 7 - Inventories

3 Months Ended

Mar. 31, 2014

Inventory Disclosure [Abstract]

Inventory Disclosure [Text Block]

Note 7 – Inventories

Inventories- Inventories consist of the following:


(In thousands)	March 31, 2014		December 31, 2013


Raw materials:
Drilling fluids	$	173,393	$	153,901
Mats		914		790
Total raw materials		174,307		154,691

Blended drilling fluids components		23,914		34,075

Finished goods- mats		1,344		914
Total	$	199,565	$	189,680

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 systems require raw materials to be added, as required to meet specified customer requirements.

Note 8 - Financing Arrangements and Fair Value of Financial Instruments

3 Months Ended

Mar. 31, 2014

Debt Disclosure [Abstract]

Debt Disclosure [Text Block]

Note 8 – Financing Arrangements and Fair Value of Financial Instruments

Our financing arrangements include $172.5 million of unsecured convertible senior notes (“Senior Notes”) and a $125.0 million revolving credit facility which can be increased by $75.0 million for a maximum $200.0 million of capacity. At March 31, 2014, we had no outstanding borrowings under the revolving credit facility. The Senior Notes bear interest at a rate of 4.0% per year, payable semi-annually in arrears on April 1 and October 1 of each year, beginning April 1, 2011. Holders may convert the Senior 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 Senior Notes (equivalent to an initial conversion price of $11.00 per share of common stock), subject to adjustment in certain circumstances. Upon conversion, the Senior Notes will be settled in shares of our common stock. We may not redeem the Senior Notes prior to their maturity date.

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 Senior Notes, approximated their fair values at March 31, 2014 and December 31, 2013. The estimated fair value of our Senior Notes is $219.1 million at March 31, 2014 and $231.2 million at December 31, 2013, based on quoted market prices at these respective dates.

Note 9 - Commitments and Contingencies

3 Months Ended

Mar. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure [Text Block]

Note 9 – 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. In the opinion of management, any liability in these matters should not have a material effect on our consolidated financial statements.

Note 10 - Segment Data

3 Months Ended

Mar. 31, 2014

Segment Reporting [Abstract]

Segment Reporting Disclosure [Text Block]

Note 10 – Segment Data

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

	First Quarter
(In thousands)	2014			2013

Revenues
Fluids systems	$	211,400		$	247,339
Mats & integrated services		31,424			20,584
Total Revenues	$	242,824		$	267,923

Operating Income (loss)
Fluids systems	$	15,740		$	22,622
Mats & integrated services		13,373			8,480
Corporate office		(8,356	)		(6,241	)
Operating Income	$	20,757		$	24,861

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 10
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-Paragraph 26
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Accounting Policies, by Policy (Policies)

3 Months Ended

Mar. 31, 2014

Accounting Policies [Abstract]

New Accounting Pronouncements, Policy [Policy Text Block]

New Accounting Standards

Note 2 - Discontinued Operations (Tables)

3 Months Ended

Mar. 31, 2014

Income Statement [Member]

Note 2 - Discontinued Operations (Tables) [Line Items]

Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]

	Three Months Ended March 31,
(In thousands)	2014		2013

Revenues	$	11,744	$	14,595

Income from discontinued operations before income taxes		1,770		3,508
Income from discontinued operations, net of tax		1,152		2,508
Gain from disposal of discontinued operations before income taxes		33,974		-
Gain from disposal of discontinued operations, net of tax		22,117		-

Balance Sheet [Member]

Note 2 - Discontinued Operations (Tables) [Line Items]

Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]

	December 31,
(In thousands)	2013

Receivables, net	$	11,915
Prepaid expenses and other current assets		1,188
Property, plant and equipment		62,333
Other assets		3,584
Assets of discontinued operations	$	79,020

Accounts payable	$	4,415
Other Accrued liabilities		1,542
Deferred tax liability		12,449
Other noncurrent liabilities		10,291
Liabilities of discontinued operations	$	28,697

- Definition

Tabular disclosure of disposal groups, which may include the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the classification and carrying value of the assets and liabilities comprising the disposal group, and the segment in which the disposal group was reported. Also may include the amount of adjustments to amounts previously reported in discontinued operations such as resolution of contingencies arising from the disposal transaction or the operations of the component prior to disposal.

+ References + Details

Note 3 - Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	First Quarter
(In thousands, except per share data)	2014		2013

Basic EPS:
Income from continuing operations	$	11,742	$	14,867

Weighted average number of common shares outstanding		84,743		84,100

Basic income from continuing operations per common share	$	0.14	$	0.18


Diluted EPS:
Income from continuing operations	$	11,742	$	14,867
Assumed conversions of Senior Notes		1,261		1,250
Adjusted income from continuing operations	$	13,003	$	16,117

Weighted average number of common shares outstanding-basic		84,743		84,100
Add: Dilutive effect of stock options and restricted stock awards		1,674		1,572
Dilutive effect of Senior Notes		15,682		15,682

Diluted weighted average number of common shares outstanding		102,099		101,354

Diluted income from continuing operations per common share	$	0.13	$	0.16

Stock options excluded from calculation of diluted earnings per share because anti-dilutive for the period		627		592

Note 4 - Acquisition (Tables)

3 Months Ended

Mar. 31, 2014

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

(In thousands)

Receivables, net	$	2,155
Property, plant and equipment, net		2,160
Goodwill		4,544
Other intangibles, net		4,528
Total assets acquired		13,387

Accounts payable		3,350
Short-term debt		284
Accrued liabilities		285
Deferred tax liability		1,092
Other noncurrent liabilities		1,600
Total liabilities assumed		6,611

Total cash conveyed at closing	$	6,776

Note 6 - Receivables (Tables)

3 Months Ended

Mar. 31, 2014

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	March 31,			December 31,
(In thousands)	2014			2013

Gross trade receivables	$	254,376		$	252,168
Allowance for doubtful accounts		(4,204	)		(4,142	)
Net trade receivables		250,172			248,026

Other receivables		25,910			20,503

Total receivables, net	$	276,082		$	268,529

Note 7 - Inventories (Tables)

3 Months Ended

Mar. 31, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]


(In thousands)	March 31, 2014		December 31, 2013


Raw materials:
Drilling fluids	$	173,393	$	153,901
Mats		914		790
Total raw materials		174,307		154,691

Blended drilling fluids components		23,914		34,075

Finished goods- mats		1,344		914
Total	$	199,565	$	189,680

Note 10 - Segment Data (Tables)

3 Months Ended

Mar. 31, 2014

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	First Quarter
(In thousands)	2014			2013

Revenues
Fluids systems	$	211,400		$	247,339
Mats & integrated services		31,424			20,584
Total Revenues	$	242,824		$	267,923

Operating Income (loss)
Fluids systems	$	15,740		$	22,622
Mats & integrated services		13,373			8,480
Corporate office		(8,356	)		(6,241	)
Operating Income	$	20,757		$	24,861

Note 2 - Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Discontinued Operations and Disposal Groups [Abstract]
Proceeds from Divestiture of Businesses	$ 100,000
Proceeds from Divestiture of Businesses, Net	89,167
Sale Price Amount Held in Escrow	8,000
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	33,974
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	22,117
Accrued Liabilities, Current	65,196	$ 46,341
Disposal Group, Including Discontinued Operation, Accrued Income Taxes Payable	$ 31,000

Note 2 - Discontinued Operations (Details) - Summary of Operations from Discontinued Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Summary of Operations from Discontinued Operations [Abstract]
Revenues	$ 11,744	$ 14,595
Income from discontinued operations before income taxes	1,770	3,508
Income from discontinued operations, net of tax	1,152	$ 2,508
Gain from disposal of discontinued operations before income taxes	33,974
Gain from disposal of discontinued operations, net of tax	$ 22,117

Note 2 - Discontinued Operations (Details) - Assets and Liabilities from Discontinued Operations $ in Thousands	Mar. 31, 2014 USD ($)
Assets and Liabilities from Discontinued Operations [Abstract]
Receivables, net	$ 11,915
Prepaid expenses and other current assets	1,188
Property, plant and equipment	62,333
Other assets	3,584
Assets of discontinued operations	79,020
Accounts payable	4,415
Other Accrued liabilities	1,542
Deferred tax liability	12,449
Other noncurrent liabilities	10,291
Liabilities of discontinued operations	$ 28,697

Note 3 - Earnings Per Share (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Weighted Average Dilutive Stock Options and Restricted Stock Outstanding	5.0	5.5

Note 3 - Earnings Per Share (Details) - Earnings Per Share - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Basic EPS:
Net income from continuing operations (in Dollars)	$ 11,742	$ 14,867
Assumed conversions of Senior Notes (in Dollars)	1,261	1,250
Adjusted income from continuing operations (in Dollars)	$ 13,003	$ 16,117
Weighted average number of common shares outstanding - basic	84,743	84,100
Add: Dilutive effect of stock options and restricted stock awards	1,674	1,572
Dilutive effect of Senior Notes	15,682	15,682
Diluted weighted average number of common shares outstanding	102,099	101,354
Diluted income from continuing operations per common share (in Dollars per share)	$ 0.13	$ 0.16
Stock options excluded from calculation of diluted earnings per share because anti-dilutive for the period	627	592
Basic income from continuing operations per common share (in Dollars per share)	$ 0.14	$ 0.18

Note 4 - Acquisition (Details) - Dec. 31, 2013 £ in Millions, $ in Millions	USD ($)	GBP (£)
Maximum [Member] \| Terrafirma Roadways [Member]
Note 4 - Acquisition (Details) [Line Items]
Business Acquisition Contingent Consideration Potential Cash Payment1	$ 1.6	£ 1.0

Note 4 - Acquisition (Details) - Assets Acquired and Liabilities Assumed - USD ($) $ in Thousands	Mar. 31, 2014	Dec. 31, 2013
Terrafirma Roadways [Member]
Note 4 - Acquisition (Details) - Assets Acquired and Liabilities Assumed [Line Items]
Receivables, net		$ 2,155
Property, plant and equipment, net		2,160
Goodwill		4,544
Other intangibles, net		4,528
Total assets acquired		13,387
Accounts payable		3,350
Short-term debt		284
Accrued liabilities		285
Deferred tax liability		1,092
Other noncurrent liabilities		1,600
Total liabilities assumed		6,611
Total cash conveyed at closing		6,776
Goodwill	$ 93,781	$ 94,064

Note 5 - Treasury Stock (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Share Repurchase Program [Member]
Note 5 - Treasury Stock (Details) [Line Items]
Stock Repurchase Program, Authorized Amount	$ 100.0	$ 50.0
Stock Repurchased During Period, Shares (in Shares)	1,095,413
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share)	$ 11.84
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 80.3

Note 6 - Receivables (Details) - Receivables - USD ($) $ in Thousands	Mar. 31, 2014	Dec. 31, 2013
Receivables [Abstract]
Gross trade receivables	$ 254,376	$ 252,168
Allowance for doubtful accounts	(4,204)	(4,142)
Net trade receivables	250,172	248,026
Other receivables	25,910	20,503
Total receivables, net	$ 276,082	$ 268,529

Note 7 - Inventories (Details) - Inventories - USD ($) $ in Thousands	Mar. 31, 2014	Dec. 31, 2013
Drilling fluids [Member]
Raw materials:
Raw materials	$ 173,393	$ 153,901
Mats [Member]
Raw materials:
Raw materials	914	790
Finished goods- mats	1,344	914
Blended Drilling Fluids Components [Member]
Raw materials:
Blended drilling fluids components	23,914	34,075
Raw materials	174,307	154,691
Total	$ 199,565	$ 189,680

Note 8 - Financing Arrangements and Fair Value of Financial Instruments (Details) - Revolving Credit Facility [Member] $ in Millions	Mar. 31, 2014 USD ($)
Minimum [Member]
Note 8 - Financing Arrangements and Fair Value of Financial Instruments (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 125.0
Maximum [Member]
Note 8 - Financing Arrangements and Fair Value of Financial Instruments (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 200.0

Note 10 - Segment Data (Details) - Financial Information by Segment - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Fluids Systems & Engineering [Member]
Revenues
Revenues	$ 211,400	$ 247,339
Operating Income (loss)
Operating Income	15,740	22,622
Mats and Integrated Services [Member]
Revenues
Revenues	31,424	20,584
Operating Income (loss)
Operating Income	13,373	8,480
Corporate Segment [Member]
Operating Income (loss)
Operating Income	(8,356)	(6,241)
Revenues	242,824	267,923
Operating Income	$ 20,757	$ 24,861

Label	Element	Value
Senior Notes [Member]
Fair Value, Estimate Not Practicable, Senior Debt Obligations	us-gaap_FairValueEstimateNotPracticableSeniorDebtObligations	$ 219,100,000
Fair Value, Estimate Not Practicable, Senior Debt Obligations	us-gaap_FairValueEstimateNotPracticableSeniorDebtObligations	$ 231,200,000
Debt Instrument, Convertible, Conversion Price	us-gaap_DebtInstrumentConvertibleConversionPrice1	$ 11.00
Debt Instrument, Face Amount	us-gaap_DebtInstrumentFaceAmount	$ 172,500,000
DebtConversionPrincipalAmountOfSeniorNotesAsBasisForConversionRate	nr_DebtConversionPrincipalAmountOfSeniorNotesAsBasisForConversionRate	$ 1,000
DebtConversionConvertedInstrumentSharesIssuedForBasisPrincipal	nr_DebtConversionConvertedInstrumentSharesIssuedForBasisPrincipal	90.8893
Debt Instrument, Interest Rate, Stated Percentage	us-gaap_DebtInstrumentInterestRateStatedPercentage	4.00%
Revolving Credit Facility [Member]
AdditionalBorrowingCapacityOnCreditFacility	nr_AdditionalBorrowingCapacityOnCreditFacility	$ 75,000,000
Terrafirma Roadways [Member]
Payments to Acquire Businesses, Net of Cash Acquired	us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired	$ 6,800,000
BusinessAcquisitionPeriod	nr_BusinessAcquisitionPeriod	18 months