Core Laboratories (CLB) 10-Q 25 Jul 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 24, 2014
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'CORE LABORATORIES N V	'
Entity Central Index Key	'0001000229	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	44,420,900

Consolidated_Balance_Sheets_St

Consolidated Balance Sheets Statement (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
CURRENT ASSETS:	'	'
Cash and cash equivalents	$29,548	$25,088
Accounts receivable, net of allowance for doubtful accounts of $3,371 and $2,872 at 2014 and 2013, respectively	200,990	201,322
Inventories	51,392	46,821
Prepaid expenses	14,892	13,128
Income taxes receivable	13,863	5,294
Other current assets	11,557	12,215
TOTAL CURRENT ASSETS	322,242	303,868
PROPERTY, PLANT AND EQUIPMENT, net	143,926	138,824
INTANGIBLES, net	12,037	10,949
GOODWILL	163,337	163,337
DEFERRED TAX ASSETS, net	4,214	4,452
OTHER ASSETS	43,372	39,580
TOTAL ASSETS	689,128	661,010
CURRENT LIABILITIES:	'	'
Accounts payable	51,292	50,821
Accrued payroll and related costs	34,266	38,969
Taxes other than payroll and income	9,687	6,979
Unearned revenue	11,844	10,887
Income taxes payable	13,057	14,462
Other accrued expenses	13,778	13,657
TOTAL CURRENT LIABILITIES	133,924	135,775
LONG-TERM DEBT AND CAPITAL LEASE OBLIGATIONS	333,000	267,002
DEFERRED COMPENSATION	41,125	38,014
DEFERRED TAX LIABILITIES, net	3,230	8,870
OTHER LONG-TERM LIABILITIES	41,568	41,960
COMMITMENTS AND CONTINGENCIES (Note 6)	'	'
Preference shares, EUR 0.02 par value; 6,000,000 shares authorized, none issued or outstanding	0	0
Common shares, EUR 0.02 par value; 200,000,000 shares authorized, 46,750,002 issued and 44,480,019 outstanding at 2014 and 46,750,002 issued and 45,101,389 outstanding at 2013	1,203	1,203
Additional paid-in capital	2,691	0
Retained earnings	495,792	415,930
Accumulated other comprehensive income (loss)	-8,454	-8,626
Treasury shares (at cost), 2,269,983 at 2014 and 1,648,613 at 2013	-361,074	-245,184
Total Core Laboratories N.V. shareholders' equity	130,158	163,323
Non-controlling interest	6,123	6,066
TOTAL EQUITY	136,281	169,389
TOTAL LIABILITIES AND EQUITY	$689,128	$661,010

Consolidated_Balance_Sheets_Ba

Consolidated Balance Sheets Balance Sheet Parenthetical	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified	USD ($)	EUR (€)	USD ($)	EUR (€)
Allowance for Doubtful Accounts Receivable, Current	$3,371	'	$2,872	'
Common Stock, Par or Stated Value Per Share	'	€ 0.02	'	€ 0.02
Common Stock, Shares Authorized	200,000,000	200,000,000	200,000,000	200,000,000
Common Stock, Shares, Issued	46,750,002	46,750,002	46,750,002	46,750,002
Common Stock, Shares, Outstanding	44,480,019	44,480,019	45,101,389	45,101,389
Treasury Stock, Shares	2,269,983	2,269,983	1,648,613	1,648,613
Preferred Stock, Par or Stated Value Per Share	'	€ 0.02	'	€ 0.02
Preferred Stock, Shares Authorized	6,000,000	6,000,000	6,000,000	6,000,000
Preferred Stock, Shares Issued	0	0	0	0
Preferred Stock, Shares Outstanding	0	0	0	0

Consolidated_Statements_of_Ope

Consolidated Statements of Operations Statement (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
REVENUE:	'	'	'	'
Services	$188,299	$187,676	$377,034	$370,157
Product sales	79,263	75,463	153,431	153,909
Total revenue	267,562	263,139	530,465	524,066
OPERATING EXPENSES:	'	'	'	'
Cost of services, exclusive of depreciation expense shown below	111,706	109,661	222,277	219,814
Cost of product sales, exclusive of depreciation expense shown below	56,452	53,842	107,550	107,334
General and administrative expenses, exclusive of depreciation expense shown below	11,148	11,173	21,667	23,982
Depreciation	6,027	5,656	12,369	11,379
Amortization	291	308	582	610
Other (income) expense, net	-2,196	630	-941	41
OPERATING INCOME	84,134	81,869	166,961	160,906
Interest expense	2,794	2,263	5,157	4,532
Income before income tax expense	81,340	79,606	161,804	156,374
Income tax expense	17,244	19,664	36,555	39,700
Net income	64,096	59,942	125,249	116,674
Net income (loss) attributable to non-controlling interest	362	266	451	482
Net income attributable to Core Laboratories N.V.	$63,734	$59,676	$124,798	$116,192
EARNINGS PER SHARE INFORMATION:	'	'	'	'
Basic earnings per share attributable to Core Laboratories N.V. (in dollars per share)	$1.43	$1.30	$2.79	$2.52
Diluted earnings per share attributable to Core Laboratories N.V. (in dollars per share)	$1.42	$1.29	$2.77	$2.51
Cash dividends per share (in dollars per share)	$0.50	$0.32	$1	$0.64
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:	'	'	'	'
Basic	44,660	45,841	44,783	46,020
Diluted	44,910	46,128	45,045	46,313

Consolidated_Statement_of_Othe

Consolidated Statement of Other Comprehensive Income (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income	$64,096	$59,942	$125,249	$116,674
Amortization to net income of transition asset	-22	-22	-44	-44
Amortization to net income of prior service cost	1	40	3	80
Amortization to net income of actuarial loss	135	117	270	234
Income taxes on pension and other postretirement benefit plans	-28	-34	-57	-68
Comprehensive income	64,182	60,043	125,421	116,876
Comprehensive (Income) Loss, Net of Tax, Attributable to Noncontrolling Interest	362	266	451	482
Comprehensive income attributable to Core Laboratories N.V.	$63,820	$59,777	$124,970	$116,394

Consolidated_Statement_of_Cash

Consolidated Statement of Cash Flows Statement (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'
Net income (loss)	$125,249	$116,674
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Stock-based compensation	10,646	10,176
Depreciation and amortization	12,951	11,989
(Increase) decrease in value of life insurance policies	-1,497	-1,456
Deferred income taxes	-4,436	-709
Other non-cash items	878	-420
Changes in assets and liabilities:	'	'
Accounts receivable	261	-5,345
Inventories	-4,824	-6,168
Prepaid expenses and other current assets	-10,887	5,433
Other assets	1,219	-450
Accounts payable	1,464	2,081
Accrued expenses	-3,256	-1,939
Increase (Decrease) in Deferred Revenue	957	2,490
Other long-term liabilities	2,508	4,145
Net cash provided by operating activities	131,233	136,501
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'
Capital expenditures	-19,787	-17,935
Patents and other intangibles	-304	-2,229
Business acquisition, net of cash acquired	-1,200	0
Proceeds from sale of assets	604	697
Premiums on life insurance	-2,866	-1,527
Net cash used in investing activities	-23,553	-20,994
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'
Repayment of debt borrowings	-37,041	-35,025
Proceeds from debt borrowings	103,000	51,000
Stock options exercised	0	83
Excess tax benefits from stock-based compensation	1,449	2,353
Debt financing costs	-3	0
Non-controlling interest - dividend	-394	0
Dividends paid	-44,937	-29,508
Repurchase of common shares	-125,294	-100,416
Net cash used in financing activities	-103,220	-111,513
NET CHANGE IN CASH AND CASH EQUIVALENTS	4,460	3,994
CASH AND CASH EQUIVALENTS, beginning of period	25,088	19,226
CASH AND CASH EQUIVALENTS, end of period	$29,548	$23,220

Basis_of_Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Basis of Presentation	'
	BASIS OF PRESENTATION
	The accompanying unaudited consolidated financial statements include the accounts of Core Laboratories N.V. and its subsidiaries for which we have a controlling voting interest and/or a controlling financial interest. These financial statements have been prepared in accordance with United States ("U.S.") generally accepted accounting principles ("GAAP") for interim financial information using the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, these financial statements do not include all of the information and footnote disclosures required by U.S. GAAP and should be read in conjunction with the audited financial statements and the summary of significant accounting policies and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2013 (the "2013 Annual Report").
	Core Laboratories N.V. uses the equity method of accounting for investments in which it has less than a majority interest and over which it does not exercise control but does exert significant influence. We use the cost method to record certain other investments in which we own less than 20% of the outstanding equity and do not exercise control or exert significant influence. Non-controlling interests have been recorded to reflect outside ownership attributable to consolidated subsidiaries that are less than 100% owned. In the opinion of management, all adjustments considered necessary for a fair statement of the results for the interim periods presented have been included in these financial statements. Furthermore, the operating results presented for the three and six months ended June 30, 2014 may not necessarily be indicative of the results that may be expected for the year ended December 31, 2014.
	Core Laboratories N.V.'s balance sheet information for the year ended December 31, 2013 was derived from the 2013 audited consolidated financial statements but does not include all disclosures in accordance with U.S. GAAP.
	Certain reclassifications were made to prior period amounts in order to conform to the current period presentation. These reclassifications had no impact on the reported net income or cash flows for the three and six months ended June 30, 2013.
	References to "Core Lab", the "Company", "we", "our" and similar phrases are used throughout this Quarterly Report on Form 10-Q and relate collectively to Core Laboratories N.V. and its consolidated subsidiaries.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	INVENTORIES
	Inventories consist of the following (in thousands):
		June 30,		December 31,
		2014		2013
		(Unaudited)
	Finished goods	$	38,332	$	37,143
	Parts and materials	11,180		8,323
	Work in progress	1,880		1,355
	Total inventories	$	51,392	$	46,821
	We include freight costs incurred for shipping inventory to customers in the Cost of product sales line of the Consolidated Statements of Operations.

Goodwill_and_Intangibles

Goodwill and Intangibles	6 Months Ended
	Jun. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangibles	'
	GOODWILL AND INTANGIBLES
	We account for intangible assets with indefinite lives, including goodwill, in accordance with the applicable accounting guidance, which requires us to evaluate these assets for impairment annually or more frequently if an indication of impairment is possible. Based upon our most recent evaluation at the end of 2013, we determined that intangible assets, including goodwill, are not impaired. We amortize intangible assets with a finite life on a straight-line basis over their respective useful lives.

Debt_and_Capital_Lease_Obligat

Debt and Capital Lease Obligations	6 Months Ended
	Jun. 30, 2014
Debt and Capital Lease Obligations [Abstract]	'
Debt and Capital Lease Obligations	'
	DEBT AND CAPITAL LEASE OBLIGATIONS
	Debt is summarized in the following table (in thousands):
		June 30,		December 31,
		2014		2013
		(Unaudited)
	Senior notes	$	150,000	$	150,000
	Credit facility	183,000		117,000
	Capital lease obligations	11		28
	Total debt	333,011		267,028
	Less - current maturities of long-term debt and capital lease obligations	11		26
	Long-term debt and capital lease obligations, net	$	333,000	$	267,002
	In 2011, we issued two series of senior notes with an aggregate principal amount of $150 million ("Senior Notes") in a private placement transaction. Series A consists of $75 million in aggregate principal amount of notes that bear interest at a fixed rate of 4.01% and are due in full on September 30, 2021. Series B consists of $75 million in aggregate principal amount of notes that bear interest at a fixed rate of 4.11% and are due in full on September 30, 2023. Interest on each series of the Senior Notes is payable semi-annually on March 30 and September 30.
	We maintain a revolving credit facility (the "Credit Facility") with an aggregate borrowing capacity of $300 million at June 30, 2014. The Credit Facility provides an option to increase the commitment under the Credit Facility to $350 million, if certain conditions are met. The Credit Facility bears interest at variable rates from LIBOR plus 1.50% to a maximum of LIBOR plus 2.25%. Any outstanding balance under the Credit Facility is due September 28, 2016 when the Credit Facility matures. Interest payment terms are variable depending upon the specific type of borrowing under this facility. Our available capacity at any point in time is reduced by borrowings outstanding at the time and outstanding letters of credit which totaled $21.9 million at June 30, 2014, resulting in an available borrowing capacity under the Credit Facility of $95.1 million. In addition to those items under the Credit Facility, we had $24.4 million of outstanding letters of credit and performance guarantees and bonds from other sources as of June 30, 2014.
	The terms of the Credit Facility and the Senior Notes require us to meet certain covenants, including, but not limited to, certain minimum equity and cash flow ratios. We believe that we are in compliance with all such covenants contained in our credit agreements. Certain of our material, wholly-owned subsidiaries are guarantors or co-borrowers under the Credit Facility and Senior Notes.
	The estimated fair value of total debt at June 30, 2014 and December 31, 2013 approximated the book value of total debt. The fair value was estimated using Level 2 inputs by calculating the sum of the discounted future interest and principal payments through the date of maturity.

Pensions_and_Other_Postretirem

Pensions and Other Postretirement Benefits	6 Months Ended
	Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Pensions and Other Postretirement Benefits	'
	PENSIONS AND OTHER POSTRETIREMENT BENEFITS
	Defined Benefit Plan
	We provide a non-contributory defined benefit pension plan for substantially all of our Dutch employees ("Dutch Plan") who were hired prior to 2007 based on years of service and final pay or career average pay, depending on when the employee began participating. The benefits earned by the employees are immediately vested. We fund the future obligations of the Dutch Plan by purchasing insurance contracts from a large multi-national insurance company. The insurance contracts are purchased annually and renew after five years at which time they are replaced with new contracts that are adjusted to include changes in the benefit obligation for the current year and redemption of the expired contracts. We make annual premium payments to the insurance company based on each employee's age and current salary, and the contractual growth rate. We determine the fair value of these plan assets with the assistance of an actuary using observable inputs (Level 2), which approximates the contract value of the investments.
	The following table summarizes the components of net periodic pension cost under the Dutch Plan for the three and six months ended June 30, 2014 and 2013 (in thousands):
		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2014			2013			2014			2013
		(Unaudited)						(Unaudited)
	Service cost	$	372		$	388		$	742		$	784
	Interest cost	452			411			902			831
	Expected return on plan assets	(335		)	(317		)	(669		)	(640		)
	Amortization of transition asset	(22		)	(22		)	(44		)	(44		)
	Amortization of prior service cost	1			40			3			80
	Amortization of actuarial loss	135			117			270			234
	Net periodic pension cost	$	603		$	617		$	1,204		$	1,245
	During the six months ended June 30, 2014, we contributed approximately $1.1 million to fund the estimated 2014 premiums on investment contracts held by the Dutch Plan.
	Defined Contribution Plans
	We maintain five defined contribution plans (the "Defined Contribution Plans") for the benefit of eligible employees in Canada, The Netherlands, Puerto Rico, the United Kingdom and the United States. In accordance with the terms of each plan, we and our participating employees contribute up to specified limits, and under certain plans, we may make discretionary contributions in accordance with the terms of the Defined Contribution Plans.
	Deferred Compensation Arrangements
	We have entered into deferred compensation contracts for certain key employees. The benefits under these contracts are fully vested and benefits are paid when the participants attain 65 years of age. Life insurance policies with cash surrender values have been purchased for the purpose of assisting in the funding of the deferred compensation contracts.
	We have adopted a non-qualified deferred compensation plan that allows certain highly compensated employees to defer a portion of their salary, commission and bonus, as well as the amount of any reductions in their deferrals under the deferred compensation plan for employees in the United States (the "Deferred Compensation Plan"), due to certain limitations imposed by the U.S. Internal Revenue Code of 1986, as amended (the "Internal Revenue Code"). The Deferred Compensation Plan also provides for employer contributions to be made on behalf of participants equal in amount to certain forfeitures of, and/or reductions in, employer contributions that participants could have otherwise received under the Defined Contribution Plan for U.S. employees qualified under Internal Revenue Code Section 401(k) had there not been certain limitations imposed by the Internal Revenue Code. Employer contributions to the Deferred Compensation Plan vest ratably over a period of five years. Contributions to the plan are invested in equity and other investment fund assets within life insurance policies, and carried on the balance sheet at fair value. A participant's plan benefits include the participant's deferrals, the vested portion of the employer's contributions, and deemed investment gains and losses on such amounts. The benefits under these contracts are fully vested and payment of benefits generally commences as of the last day of the month following the termination of services except that the payment of benefits for select executives generally commences on the first working day following a six month waiting period following the date of termination.
	The Company's only financial assets and liabilities which involve fair value measures relate to certain aspects of the Company's benefit plans. On a recurring basis, we use the market approach to value certain assets and liabilities at fair value at quoted prices in an active market (Level 1) and certain assets and liabilities using significant other observable inputs (Level 2) with the assistance of a third party specialist. We do not have any assets or liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3). Gains and losses related to the fair value changes in the deferred compensation assets and liabilities are recorded in General and Administrative Expense in the Consolidated Statements of Operations. The following table summarizes the fair value balances (in thousands):
	(Unaudited)				Fair Value Measurement at
					June 30, 2014
		Total			Level 1			Level 2			Level 3
	Assets:
	Deferred compensation trust assets (1)	$	23,137		$	—		$	23,137		$	—
	Liabilities:
	Deferred compensation plan	$	28,105		$	—		$	28,105		$	—
					Fair Value Measurement at
					December 31, 2013
		Total			Level 1			Level 2			Level 3
	Assets:
	Deferred compensation trust assets (1)	$	20,104		$	—		$	20,104		$	—
	Liabilities:
	Deferred compensation plan	$	25,470		$	1,182		$	24,288		$	—
	(1) Trust assets consist of the cash surrender value of life insurance policies intended to assist in the funding of the deferred compensation plan and are included in Other assets in the Balance Sheet.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	COMMITMENTS AND CONTINGENCIES
	We have been and may from time to time be named as a defendant in legal actions that arise in the ordinary course of business. These include, but are not limited to, employment-related claims and contractual disputes or claims for personal injury or property damage which occur in connection with the provision of our services and products. Management does not currently believe that any of our pending contractual, employment-related, personal injury or property damage claims and disputes will have a material effect on our future results of operations, financial position or cash flow.
	In connection with an audit of the 2008 and 2009 U.S. federal income tax returns of our U.S. consolidated group, the U.S. Internal Revenue Service has proposed that certain transfer pricing positions taken by the Company be adjusted, which could result in additional federal income tax of approximately $11 million plus interest for this two-year audit period. We believe that these transactions are valid as originally recorded, and we are appealing this proposed adjustment. It is our belief that we will prevail on this issue; consequently, we have made no additional income tax accrual for this proposed adjustment.

Equity

Equity	6 Months Ended
	Jun. 30, 2014
Equity [Abstract]	'
Equity	'
	EQUITY
	During the three months ended June 30, 2014, we repurchased 455,219 of our common shares for $78.5 million. Included in this total were rights to 17,918 shares valued at $3.3 million that were surrendered to us pursuant to the terms of a stock-based compensation plan in consideration of the participants' tax burdens that may result from the issuance of common shares under that plan. During the six months ended June 30, 2014, we repurchased 709,559 of our common shares for $125.3 million. Included in this total were rights to 25,394 shares valued at $4.7 million that were surrendered to us pursuant to the terms of a stock-based compensation plan in consideration of the participants' tax burdens that may result from the issuance of common shares under that plan. Such common shares, unless canceled, may be reissued for a variety of purposes such as future acquisitions, non-employee director stock awards or employee stock awards.
	In February and May 2014, we paid a quarterly dividend of $0.50 per share of common stock. In addition, on July 8, 2014, we declared a quarterly dividend of $0.50 per share of common stock for shareholders of record on July 18, 2014 and payable on August 18, 2014.
	The following table summarizes our changes in equity for the six months ended June 30, 2014 (in thousands):
	(Unaudited)	Common Shares			Additional Paid-In Capital			Retained Earnings			Accumulated			Treasury Stock			Non-Controlling Interest			Total Equity
											Other
											Comprehensive Income (Loss)
	December 31, 2013	$	1,203		$	—		$	415,930		$	(8,626	)	$	(245,184	)	$	6,066		$	169,389
	Stock options exercised	—						—			—						—			—
	Stock based-awards	—			1,242			—			—			9,404			—			10,646
	Tax benefit of stock-based awards issued	—			1,449			—			—			—			—			1,449
	Repurchase of common shares	—			—			—			—			(125,294		)	—			(125,294		)
	Dividends paid	—			—			(44,936		)	—			—			—			(44,936		)
	Non-controlling interest dividends	—			—			—			—			—			(394		)	(394		)
	Amortization of deferred pension costs, net of tax	—			—			—			172			—			—			172
	Net income (loss)	—			—			124,798			—			—			451			125,249
	June 30, 2014	$	1,203		$	2,691		$	495,792		$	(8,454	)	$	(361,074	)	$	6,123		$	136,281
	Accumulated other comprehensive income (loss) consisted of the following (in thousands):
		June 30,			December 31,
		2014			2013
		(Unaudited)
	Prior service cost	$	(52	)	$	(55	)
	Transition asset	98			131
	Unrecognized net actuarial loss	(8,500		)	(8,702		)
	Total accumulated other comprehensive income (loss)	$	(8,454	)	$	(8,626	)

Earnings_per_Share

Earnings per Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Earnings per Share	'
	EARNINGS PER SHARE
	We compute basic earnings per common share by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted earnings per common and potential common shares include additional shares in the weighted average share calculations associated with the incremental effect of dilutive employee stock options, restricted stock awards and contingently issuable shares, as determined using the treasury stock method. The
	following table summarizes the calculation of weighted average common shares outstanding used in the computation of diluted earnings per share (in thousands):
		Three Months Ended		Six Months Ended
		June 30,		June 30,
		2014	2013	2014	2013
		(Unaudited)		(Unaudited)
	Weighted average basic common shares outstanding	44,660	45,841	44,783	46,020
	Effect of dilutive securities:
	Stock options	—	—	—	2
	Performance shares	111	116	105	105
	Restricted stock	139	171	157	186
	Weighted average diluted common and potential common shares outstanding	44,910	46,128	45,045	46,313

Other_Income_Expense_Net

Other (Income) Expense, Net	6 Months Ended
	Jun. 30, 2014
Other Income and Expenses [Abstract]	'
Other (Income) Expense, Net	'
	OTHER (INCOME) EXPENSE, NET
	The components of other (income) expense, net, were as follows (in thousands):
		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2014			2013			2014			2013
		(Unaudited)						(Unaudited)
	Sale of assets	$	(180	)	$	(323	)	$	(298	)	$	(532	)
	Results of non-consolidated subsidiaries	(52		)	(89		)	(130		)	(185		)
	Foreign exchange	(1,300		)	1,631			300			2,522
	Interest income	(185		)	(219		)	(186		)	(590		)
	Rents and royalties	(223		)	(213		)	(447		)	(443		)
	Insurance recovery	—			(7		)	—			(546		)
	Other, net	(256		)	(150		)	(180		)	(185		)
	Total other (income) expense, net	$	(2,196	)	$	630		$	(941	)	$	41
	Foreign exchange (gain) loss by currency is summarized in the following table (in thousands):
		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2014			2013			2014			2013
		(Unaudited)						(Unaudited)
	Australian Dollar	$	69		$	164		$	62		$	209
	British Pound	(222		)	79			(274		)	541
	Canadian Dollar	(860		)	665			168			968
	Euro	(50		)	126			2			354
	Mexican Peso	(28		)	191			(62		)	64
	Russian Ruble	(136		)	(60		)	40			(54		)
	Other currencies, net	(73		)	466			364			440
	Total (gain) loss	$	(1,300	)	$	1,631		$	300		$	2,522

Income_Tax_Expense

Income Tax Expense	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Tax Expense	'
	INCOME TAX EXPENSE
	The effective tax rates for the three months ended June 30, 2014 and 2013 were 21.2% and 24.7%, respectively. The effective tax rates for the six months ended June 30, 2014 and 2013 were 22.6% and 25.4%, respectively. The change in tax expense is primarily the result of several items discrete to each quarter along with changes in activity levels among jurisdictions with different tax rates.

Segment_Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Segment Reporting	'
	SEGMENT REPORTING
	We operate our business in three reportable segments: (1) Reservoir Description, (2) Production Enhancement and (3) Reservoir Management. These segments provide different services and products and utilize different technologies.
	•	Reservoir Description: Encompasses the characterization of petroleum reservoir rock, fluid and gas samples. We provide analytical and field services to characterize properties of crude oil and petroleum products to the oil and gas industry.
	•	Production Enhancement: Includes services and products relating to reservoir well completions, perforations, stimulations and production. We provide integrated services to evaluate the effectiveness of well completions and to develop solutions aimed at increasing the effectiveness of enhanced oil recovery projects.
	•	Reservoir Management: Combines and integrates information from reservoir description and production enhancement services to increase production and improve recovery of oil and gas from our clients' reservoirs.
	Results for these segments are presented below. We use the same accounting policies to prepare our segment results as are used to prepare our Consolidated Financial Statements. All interest and other non-operating income (expense) is attributable to the Corporate & Other area and is not allocated to specific segments. Summarized financial information concerning our segments is shown in the following table (in thousands):
	(Unaudited)	Reservoir Description		Production Enhancement		Reservoir Management		Corporate & Other 1			Consolidated
	Three Months Ended June 30, 2014
	Revenue from unaffiliated clients	$	130,589	$	110,993	$	25,980	$	—		$	267,562
	Inter-segment revenue	2,763		384		347		(3,494		)	—
	Segment operating income (loss)	36,341		37,660		9,794		339			84,134
	Total assets (at end of period)	318,370		264,784		39,795		66,179			689,128
	Capital expenditures	6,280		1,755		282		3,802			12,119
	Depreciation and amortization	3,935		1,880		366		137			6,318
	Three Months Ended June 30, 2013
	Revenue from unaffiliated clients	$	129,222	$	110,199	$	23,718	$	—		$	263,139
	Inter-segment revenue	1,090		740		400		(2,230		)	—
	Segment operating income (loss)	36,918		37,239		7,475		237			81,869
	Total assets (at end of period)	299,399		255,987		35,570		64,160			655,116
	Capital expenditures	6,424		1,851		517		700			9,492
	Depreciation and amortization	3,599		1,797		189		379			5,964
	Six Months Ended June 30, 2014
	Revenue from unaffiliated clients	$	255,845	$	221,273	$	53,347	$	—		$	530,465
	Inter-segment revenue	5,532		1,181		767		(7,480		)	—
	Segment operating income (loss)	71,194		74,862		20,268		637			166,961
	Total assets	318,370		264,784		39,795		66,179			689,128
	Capital expenditures	11,096		2,830		367		5,494			19,787
	Depreciation and amortization	7,783		3,775		605		788			12,951
	Six Months Ended June 30, 2013
	Revenue from unaffiliated clients	$	254,467	$	217,630	$	51,969	$	—		$	524,066
	Inter-segment revenue	1,475		1,677		823		(3,975		)	—
	Segment operating income (loss)	71,769		71,477		17,321		339			160,906
	Total assets	299,399		255,987		35,570		64,160			655,116
	Capital expenditures	11,853		3,939		1,036		1,107			17,935
	Depreciation and amortization	7,224		3,614		380		771			11,989
	(1) "Corporate & Other" represents those items that are not directly related to a particular segment and eliminations.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2014
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]	'
Recent Accounting Pronouncements	'
	RECENT ACCOUNTING PRONOUNCEMENTS
	In July 2013, the Financial Accounting Standards Board ("FASB") issued ASU 2013-11 relating to income taxes (FASB ASC Topic 740), which provides guidance on the presentation of unrecognized tax benefits. The intent is to better reflect the manner in which an entity would settle at the reporting date any additional income taxes that would result from the disallowance of a tax position when net operating loss carryforwards, similar tax losses, or tax credit carryforwards exist. This pronouncement is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. We have adopted this pronouncement for our fiscal year beginning January 1, 2014. The adoption of this pronouncement did not have a material effect on our consolidated financial statements.
	In May 2014, the FASB issued ASU 2014-09 relating to revenue from contracts with customers (FASB ASC Topic 606), which provides guidance on revenue recognition. The core principal of this guidance is that an entity should recognize revenue 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. This guidance requires entities to apply a five-step method to (1) identify the contract(s) with customers; (2) identify the performance obligation(s) in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligation(s) in the contract; and (5) recognize revenue when (or as) the entity satisfies a performance obligation. This pronouncement is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016. We are evaluating the impact that the adoption of this standard will have on our consolidated financial statements.

Inventories_Tables

Inventories (Tables)	6 Months Ended
	Jun. 30, 2014
Inventory Disclosure [Abstract]	'
Schedule of Inventory, Current	'
	Inventories consist of the following (in thousands):
		June 30,		December 31,
		2014		2013
		(Unaudited)
	Finished goods	$	38,332	$	37,143
	Parts and materials	11,180		8,323
	Work in progress	1,880		1,355
	Total inventories	$	51,392	$	46,821

Debt_and_Capital_Lease_Obligat1

Debt and Capital Lease Obligations (Tables)	6 Months Ended
	Jun. 30, 2014
Debt and Capital Lease Obligations [Abstract]	'
Schedule of Long-term Debt Instruments	'
	Debt is summarized in the following table (in thousands):
		June 30,		December 31,
		2014		2013
		(Unaudited)
	Senior notes	$	150,000	$	150,000
	Credit facility	183,000		117,000
	Capital lease obligations	11		28
	Total debt	333,011		267,028
	Less - current maturities of long-term debt and capital lease obligations	11		26
	Long-term debt and capital lease obligations, net	$	333,000	$	267,002

Pensions_and_Other_Postretirem1

Pensions and Other Postretirement Benefits (Tables)	6 Months Ended
	Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Schedule of Net Benefit Costs	'
	The following table summarizes the components of net periodic pension cost under the Dutch Plan for the three and six months ended June 30, 2014 and 2013 (in thousands):
		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2014			2013			2014			2013
		(Unaudited)						(Unaudited)
	Service cost	$	372		$	388		$	742		$	784
	Interest cost	452			411			902			831
	Expected return on plan assets	(335		)	(317		)	(669		)	(640		)
	Amortization of transition asset	(22		)	(22		)	(44		)	(44		)
	Amortization of prior service cost	1			40			3			80
	Amortization of actuarial loss	135			117			270			234
	Net periodic pension cost	$	603		$	617		$	1,204		$	1,245
Fair Value, by Balance Sheet Grouping	'
	The following table summarizes the fair value balances (in thousands):
	(Unaudited)				Fair Value Measurement at
					June 30, 2014
		Total			Level 1			Level 2			Level 3
	Assets:
	Deferred compensation trust assets (1)	$	23,137		$	—		$	23,137		$	—
	Liabilities:
	Deferred compensation plan	$	28,105		$	—		$	28,105		$	—
					Fair Value Measurement at
					December 31, 2013
		Total			Level 1			Level 2			Level 3
	Assets:
	Deferred compensation trust assets (1)	$	20,104		$	—		$	20,104		$	—
	Liabilities:
	Deferred compensation plan	$	25,470		$	1,182		$	24,288		$	—
	(1) Trust assets consist of the cash surrender value of life insurance policies intended to assist in the funding of the deferred compensation plan and are included in Other assets in the Balance Sheet.

Equity_Tables

Equity (Tables)	6 Months Ended
	Jun. 30, 2014
Equity [Abstract]	'
Schedule of Stockholders Equity	'
	The following table summarizes our changes in equity for the six months ended June 30, 2014 (in thousands):
	(Unaudited)	Common Shares			Additional Paid-In Capital			Retained Earnings			Accumulated			Treasury Stock			Non-Controlling Interest			Total Equity
											Other
											Comprehensive Income (Loss)
	December 31, 2013	$	1,203		$	—		$	415,930		$	(8,626	)	$	(245,184	)	$	6,066		$	169,389
	Stock options exercised	—						—			—						—			—
	Stock based-awards	—			1,242			—			—			9,404			—			10,646
	Tax benefit of stock-based awards issued	—			1,449			—			—			—			—			1,449
	Repurchase of common shares	—			—			—			—			(125,294		)	—			(125,294		)
	Dividends paid	—			—			(44,936		)	—			—			—			(44,936		)
	Non-controlling interest dividends	—			—			—			—			—			(394		)	(394		)
	Amortization of deferred pension costs, net of tax	—			—			—			172			—			—			172
	Net income (loss)	—			—			124,798			—			—			451			125,249
	June 30, 2014	$	1,203		$	2,691		$	495,792		$	(8,454	)	$	(361,074	)	$	6,123		$	136,281
Schedule of Accumulated Other Comprehensive Income (Loss)	'
	Accumulated other comprehensive income (loss) consisted of the following (in thousands):
		June 30,			December 31,
		2014			2013
		(Unaudited)
	Prior service cost	$	(52	)	$	(55	)
	Transition asset	98			131
	Unrecognized net actuarial loss	(8,500		)	(8,702		)
	Total accumulated other comprehensive income (loss)	$	(8,454	)	$	(8,626	)

Earnings_per_Share_Tables

Earnings per Share (Tables)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Schedule of Weighted Average Number of Shares	'
	The
	following table summarizes the calculation of weighted average common shares outstanding used in the computation of diluted earnings per share (in thousands):
		Three Months Ended		Six Months Ended
		June 30,		June 30,
		2014	2013	2014	2013
		(Unaudited)		(Unaudited)
	Weighted average basic common shares outstanding	44,660	45,841	44,783	46,020
	Effect of dilutive securities:
	Stock options	—	—	—	2
	Performance shares	111	116	105	105
	Restricted stock	139	171	157	186
	Weighted average diluted common and potential common shares outstanding	44,910	46,128	45,045	46,313

Other_Income_Expense_Net_Table

Other (Income) Expense, Net (Tables)	6 Months Ended
	Jun. 30, 2014
Other Income and Expenses [Abstract]	'
Foreign Currency Gains Losses By Currency	'
	Foreign exchange (gain) loss by currency is summarized in the following table (in thousands):
		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2014			2013			2014			2013
		(Unaudited)						(Unaudited)
	Australian Dollar	$	69		$	164		$	62		$	209
	British Pound	(222		)	79			(274		)	541
	Canadian Dollar	(860		)	665			168			968
	Euro	(50		)	126			2			354
	Mexican Peso	(28		)	191			(62		)	64
	Russian Ruble	(136		)	(60		)	40			(54		)
	Other currencies, net	(73		)	466			364			440
	Total (gain) loss	$	(1,300	)	$	1,631		$	300		$	2,522
Schedule of Other Operating Cost and Expense, by Component	'
	The components of other (income) expense, net, were as follows (in thousands):
		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2014			2013			2014			2013
		(Unaudited)						(Unaudited)
	Sale of assets	$	(180	)	$	(323	)	$	(298	)	$	(532	)
	Results of non-consolidated subsidiaries	(52		)	(89		)	(130		)	(185		)
	Foreign exchange	(1,300		)	1,631			300			2,522
	Interest income	(185		)	(219		)	(186		)	(590		)
	Rents and royalties	(223		)	(213		)	(447		)	(443		)
	Insurance recovery	—			(7		)	—			(546		)
	Other, net	(256		)	(150		)	(180		)	(185		)
	Total other (income) expense, net	$	(2,196	)	$	630		$	(941	)	$	41

Segment_Reporting_Tables

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Schedule of Segment Reporting Information, by Segment	'
	Summarized financial information concerning our segments is shown in the following table (in thousands):
	(Unaudited)	Reservoir Description		Production Enhancement		Reservoir Management		Corporate & Other 1			Consolidated
	Three Months Ended June 30, 2014
	Revenue from unaffiliated clients	$	130,589	$	110,993	$	25,980	$	—		$	267,562
	Inter-segment revenue	2,763		384		347		(3,494		)	—
	Segment operating income (loss)	36,341		37,660		9,794		339			84,134
	Total assets (at end of period)	318,370		264,784		39,795		66,179			689,128
	Capital expenditures	6,280		1,755		282		3,802			12,119
	Depreciation and amortization	3,935		1,880		366		137			6,318
	Three Months Ended June 30, 2013
	Revenue from unaffiliated clients	$	129,222	$	110,199	$	23,718	$	—		$	263,139
	Inter-segment revenue	1,090		740		400		(2,230		)	—
	Segment operating income (loss)	36,918		37,239		7,475		237			81,869
	Total assets (at end of period)	299,399		255,987		35,570		64,160			655,116
	Capital expenditures	6,424		1,851		517		700			9,492
	Depreciation and amortization	3,599		1,797		189		379			5,964
	Six Months Ended June 30, 2014
	Revenue from unaffiliated clients	$	255,845	$	221,273	$	53,347	$	—		$	530,465
	Inter-segment revenue	5,532		1,181		767		(7,480		)	—
	Segment operating income (loss)	71,194		74,862		20,268		637			166,961
	Total assets	318,370		264,784		39,795		66,179			689,128
	Capital expenditures	11,096		2,830		367		5,494			19,787
	Depreciation and amortization	7,783		3,775		605		788			12,951
	Six Months Ended June 30, 2013
	Revenue from unaffiliated clients	$	254,467	$	217,630	$	51,969	$	—		$	524,066
	Inter-segment revenue	1,475		1,677		823		(3,975		)	—
	Segment operating income (loss)	71,769		71,477		17,321		339			160,906
	Total assets	299,399		255,987		35,570		64,160			655,116
	Capital expenditures	11,853		3,939		1,036		1,107			17,935
	Depreciation and amortization	7,224		3,614		380		771			11,989

Inventories_Details

Inventories (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Finished goods	$38,332	$37,143
Parts and materials	11,180	8,323
Work in progress	1,880	1,355
Total inventories	$51,392	$46,821

Debt_and_Capital_Lease_Obligat2

Debt and Capital Lease Obligations (Details) (USD $)	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]	'	'
Total debt	$333,011,000	$267,028,000
Less - current maturities of long-term debt and capital lease obligations	11,000	26,000
Long-term debt and capital lease obligations, net	333,000,000	267,002,000
Line of credit facility, current borrowing capacity	300,000,000	'
Line of credit facility, maximum borrowing capacity	350,000,000	'
Performance bonds under credit facility	21,900,000	'
Line of credit facility, remaining borrowing capacity	95,100,000	'
Performance bonds	24,400,000	'
Senior Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Total debt	150,000,000	150,000,000
Face amount	150,000,000	'
Line of Credit [Member]	'	'
Debt Instrument [Line Items]	'	'
Total debt	183,000,000	117,000,000
Maturity date	28-Sep-16	'
Capital Lease Obligations [Member]	'	'
Debt Instrument [Line Items]	'	'
Total debt	11,000	28,000
Senior Notes Series A [Member]	'	'
Debt Instrument [Line Items]	'	'
Face amount	75,000,000	'
Maturity date	30-Sep-21	'
Interest rate, effective percentage	4.01%	'
Senior Notes Series B [Member]	'	'
Debt Instrument [Line Items]	'	'
Face amount	$75,000,000	'
Maturity date	30-Sep-23	'
Interest rate, effective percentage	4.11%	'
Minimum [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt instrument, basis spread on variable rate	1.50%	'
Maximum [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt instrument, basis spread on variable rate	2.25%	'

Pensions_and_Other_Postretirem2

Pensions and Other Postretirement Benefits (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Compensation and Retirement Disclosure [Abstract]	'	'	'	'
Service cost	$372,000	$388,000	$742,000	$784,000
Interest cost	452,000	411,000	902,000	831,000
Expected return on plan assets	-335,000	-317,000	-669,000	-640,000
Amortization of transition asset	-22,000	-22,000	-44,000	-44,000
Amortization of prior service cost	1,000	40,000	3,000	80,000
Amortization of actuarial loss	135,000	117,000	270,000	234,000
Net periodic pension cost	603,000	617,000	1,204,000	1,245,000
Contributions by employer	'	'	$1,100,000	'

Pensions_and_Other_Postretirem3

Pensions and Other Postretirement Benefits (Fair Value Measurement) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets, fair value	$23,137	$20,104
Liabilities, fair value	28,105	25,470
Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets, fair value	0	0
Liabilities, fair value	0	1,182
Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets, fair value	23,137	20,104
Liabilities, fair value	28,105	24,288
Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets, fair value	0	0
Liabilities, fair value	$0	$0

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (Tax positions challenged during tax audit [Member], USD $)	Jun. 30, 2014
In Millions, unless otherwise specified
Tax positions challenged during tax audit [Member]	'
Loss Contingencies [Line Items]	'
Loss contingency, estimate of possible loss	$11

Equity_Narrative_Details

Equity (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Equity [Abstract]	'	'	'	'
Treasury sock, shares, acquired	455,219	'	'	'
Treasury stock, value, acquired	$78.50	'	'	'
Treasury shares, acquired, tax burden	17,918	'	'	'
Treasury shares, acquired, value, tax burden	$3.30	'	'	'
Cash dividends per share (in dollars per share)	$0.50	$0.32	$1	$0.64
Dividends declared (in dollars per share)	$0.50	'	'	'

Equity_Details

Equity (Details) (USD $)

3 Months Ended

6 Months Ended

In Thousands, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2012

Jun. 30, 2014

Jun. 30, 2012

Jun. 30, 2014

Jun. 30, 2012

Jun. 30, 2014

Jun. 30, 2012

Jun. 30, 2014

Jun. 30, 2012

Jun. 30, 2014

Jun. 30, 2012

Common Shares [Member]

Common Shares [Member]

Additional Paid-In Capital [Member]

Additional Paid-In Capital [Member]

Retained Earnings [Member]

Retained Earnings [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Non-Controlling Interests [Member]

Non-Controlling Interests [Member]

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance

'

'

$169,389

'

$1,203

'

$0

'

$415,930

'

($8,626)

'

($245,184)

'

$6,066

'

Stock options exercised

'

'

0

'

0

'

'

'

0

'

0

'

'

'

0

'

Stock based-awards

'

'

10,646

'

0

'

1,242

'

0

'

0

'

9,404

'

0

'

Tax benefit of stock-based awards issued

'

'

1,449

'

0

'

1,449

'

0

'

0

'

0

'

0

'

Repurchase of common shares

'

'

-125,294

'

0

'

0

'

0

'

0

'

-125,294

'

0

'

Dividends paid

'

'

-44,936

'

0

'

0

'

-44,936

'

0

'

0

'

0

'

Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders

'

'

-394

'

'

0

'

0

'

0

'

0

'

0

'

-394

Amortization of deferred pension costs, net of tax

'

'

172

'

0

'

0

'

0

'

172

'

0

'

0

'

Net income (loss)

64,096

59,942

125,249

116,674

0

'

0

'

124,798

'

0

'

0

'

'

'

Net income (loss) attributable to non-controlling interest

362

266

451

482

'

'

'

'

'

'

'

'

'

'

'

'

Ending balance

$136,281

'

$136,281

'

$1,203

'

$2,691

'

$495,792

'

($8,454)

'

($361,074)

'

$6,123

'

Equity_Comprehensive_Income_De

Equity (Comprehensive Income) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Equity [Abstract]	'	'
Prior service cost	($52)	($55)
Transition asset	98	131
Unrecognized net actuarial loss	-8,500	-8,702
Total accumulated other comprehensive income (loss)	($8,454)	($8,626)

Earnings_per_Share_Details

Earnings per Share (Details)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]	'	'	'	'
Weighted average basic common shares outstanding	44,660	45,841	44,783	46,020
Stock options (in shares)	0	0	0	2
Performance shares (in shares)	111	116	105	105
Restricted stock (in shares)	139	171	157	186
Weighted average diluted common and potential common shares outstanding	44,910	46,128	45,045	46,313

Other_Income_Expense_Net_Detai

Other (Income) Expense, Net (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Other Income and Expenses [Abstract]	'	'	'	'
Foreign exchange	($1,300)	$1,631	$300	$2,522

Other_Income_Expense_Net_Forei

Other (Income) Expense, Net (Foreign Currency (Gain ) Loss by Currency) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Foreign exchange	($1,300)	$1,631	$300	$2,522
AustralianDollar [Member]	'	'	'	'
Foreign exchange	69	164	62	209
British Pound [Member]	'	'	'	'
Foreign exchange	-222	79	-274	541
Canadian Dollar [Member]	'	'	'	'
Foreign exchange	-860	665	168	968
Euro [Member]	'	'	'	'
Foreign exchange	-50	126	2	354
Mexican Peso [Member]	'	'	'	'
Foreign exchange	-28	191	-62	64
Russian Ruble [Member]	'	'	'	'
Foreign exchange	-136	-60	40	-54
Other Currencies Net [Member]	'	'	'	'
Foreign exchange	($73)	$466	$364	$440

Income_Tax_Expense_Details

Income Tax Expense (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Effective income tax rate	21.20%	24.70%	22.60%	25.40%

Segment_Reporting_Details

Segment Reporting (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue from unaffiliated clients	$267,562	$263,139	$530,465	$524,066	'
Inter-segment revenue	0	0	0	0	'
Segment operating income (loss)	84,134	81,869	166,961	160,906	'
Total assets (at end of period)	689,128	655,116	689,128	655,116	661,010
Capital expenditures	12,119	9,492	19,787	17,935	'
Depreciation and amortization	6,318	5,964	12,951	11,989	'
Reservoir Description [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue from unaffiliated clients	'	'	255,845	254,467	'
Inter-segment revenue	'	'	5,532	1,475	'
Segment operating income (loss)	'	'	71,194	71,769	'
Capital expenditures	'	'	11,096	11,853	'
Depreciation and amortization	'	'	7,783	7,224	'
Production Enhancement [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue from unaffiliated clients	'	'	221,273	217,630	'
Inter-segment revenue	'	'	1,181	1,677	'
Segment operating income (loss)	'	'	74,862	71,477	'
Capital expenditures	'	'	2,830	3,939	'
Depreciation and amortization	'	'	3,775	3,614	'
Reservoir Management [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue from unaffiliated clients	'	'	53,347	51,969	'
Inter-segment revenue	'	'	767	823	'
Segment operating income (loss)	'	'	20,268	17,321	'
Capital expenditures	'	'	367	1,036	'
Depreciation and amortization	'	'	605	380	'
Operating Segment Corporate And Other [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue from unaffiliated clients	'	'	0	0	'
Inter-segment revenue	'	'	-7,480	-3,975	'
Segment operating income (loss)	'	'	637	339	'
Capital expenditures	'	'	5,494	1,107	'
Depreciation and amortization	'	'	788	771	'
Operating Segments [Member] | Reservoir Description [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue from unaffiliated clients	130,589	129,222	'	'	'
Inter-segment revenue	2,763	1,090	'	'	'
Segment operating income (loss)	36,341	36,918	'	'	'
Total assets (at end of period)	318,370	299,399	318,370	299,399	'
Capital expenditures	6,280	6,424	'	'	'
Depreciation and amortization	3,935	3,599	'	'	'
Operating Segments [Member] | Production Enhancement [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue from unaffiliated clients	110,993	110,199	'	'	'
Inter-segment revenue	384	740	'	'	'
Segment operating income (loss)	37,660	37,239	'	'	'
Total assets (at end of period)	264,784	255,987	264,784	255,987	'
Capital expenditures	1,755	1,851	'	'	'
Depreciation and amortization	1,880	1,797	'	'	'
Operating Segments [Member] | Reservoir Management [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue from unaffiliated clients	25,980	23,718	'	'	'
Inter-segment revenue	347	400	'	'	'
Segment operating income (loss)	9,794	7,475	'	'	'
Total assets (at end of period)	39,795	35,570	39,795	35,570	'
Capital expenditures	282	517	'	'	'
Depreciation and amortization	366	189	'	'	'
Corporate & Other [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue from unaffiliated clients	0	0	'	'	'
Inter-segment revenue	-3,494	-2,230	'	'	'
Segment operating income (loss)	339	237	'	'	'
Total assets (at end of period)	66,179	64,160	66,179	64,160	'
Capital expenditures	3,802	700	'	'	'
Depreciation and amortization	$137	$379	'	'	'