Core Laboratories (CLB) 10-Q 27 Jul 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 23, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	CORE LABORATORIES N V
Entity Central Index Key	1,000,229
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		42,570,287

Consolidated Balance Sheets Sta

Consolidated Balance Sheets Statement - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
CURRENT ASSETS:
Cash and cash equivalents	$ 22,580	$ 23,350
Accounts receivable, net of allowance for doubtful accounts of $3,731 and $3,397 at 2015 and 2014, respectively	155,112	197,163
Inventories	47,585	43,371
Prepaid expenses	14,663	14,246
Income taxes receivable	13,836	10,980
Other current assets	12,872	12,710
TOTAL CURRENT ASSETS	266,648	301,820
PROPERTY, PLANT AND EQUIPMENT, net	148,452	149,014
INTANGIBLES, net	12,667	10,642
GOODWILL	178,718	164,464
DEFERRED TAX ASSETS, net	5,857	3,876
OTHER ASSETS	46,643	45,837
TOTAL ASSETS	658,985	675,653
CURRENT LIABILITIES:
Accounts payable	42,323	47,084
Accrued payroll and related costs	38,412	34,617
Taxes other than payroll and income	9,187	11,199
Unearned revenue	14,757	11,009
Income taxes payable	8,320	8,333
Other current liabilities	23,881	19,624
TOTAL CURRENT LIABILITIES	136,880	131,866
LONG-TERM DEBT	421,508	356,000
DEFERRED COMPENSATION	43,971	42,705
DEFERRED TAX LIABILITIES, net	6,068	7,210
OTHER LONG-TERM LIABILITIES	$ 43,298	$ 43,879
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, 45,600,002 issued and 42,656,736 outstanding at 2015 and 45,600,002 issued and 43,636,984 outstanding at 2014	1,174	1,174
Additional paid-in capital	0	0
Retained earnings	432,812	415,906
Accumulated other comprehensive income (loss)	(11,232)	(11,894)
Treasury shares (at cost), 2,943,266 at 2015 and 1,963,018 at 2014	(421,633)	(317,613)
Total Core Laboratories N.V. shareholders' equity	1,121	87,573
Non-controlling interest	6,139	6,420
TOTAL EQUITY	7,260	93,993
TOTAL LIABILITIES AND EQUITY	$ 658,985	$ 675,653

Consolidated Balance Sheets Bal

Consolidated Balance Sheets Balance Sheet Parenthetical $ in Thousands	Jun. 30, 2015USD ($)shares	Jun. 30, 2015€ / shares	Dec. 31, 2014USD ($)shares	Dec. 31, 2014€ / shares
Allowance for Doubtful Accounts Receivable, Current | $	$ 3,731		$ 3,397
Common Stock, Par or Stated Value Per Share | € / shares		€ 0.02		€ 0.02
Common Stock, Shares Authorized	200,000,000		200,000,000
Common Stock, Shares, Issued	45,600,002		45,600,002
Common Stock, Shares, Outstanding	42,656,736		43,636,984
Treasury Stock, Shares	2,943,266		1,963,018
Preferred Stock, Par or Stated Value Per Share | € / shares		€ 0.02		€ 0.02
Preferred Stock, Shares Authorized	6,000,000		6,000,000
Preferred Stock, Shares Issued	0		0
Preferred Stock, Shares Outstanding	0		0

Consolidated Statements of Oper

Consolidated Statements of Operations Statement - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
REVENUE:
Services	$ 156,861	$ 188,299	$ 319,835	$ 377,034
Product sales	47,028	79,263	97,697	153,431
Total revenue	203,889	267,562	417,532	530,465
OPERATING EXPENSES:
Cost of services, exclusive of depreciation expense shown below	98,462	111,706	201,257	222,277
Cost of product sales, exclusive of depreciation expense shown below	36,157	56,452	77,636	107,550
General and administrative expense, exclusive of depreciation expense shown below	12,634	11,148	25,308	21,667
Depreciation	6,752	6,027	13,097	12,369
Amortization	178	291	399	582
Other (income) expense, net	1,813	(2,196)	2,135	(941)
Severance and other charges			7,090	0
OPERATING INCOME	47,893	84,134	90,610	166,961
Interest expense	3,116	2,794	5,519	5,157
Income before income tax expense	44,777	81,340	85,091	161,804
Income tax expense	10,075	17,244	19,347	36,555
Net income	34,702	64,096	65,744	125,249
Net income (loss) attributable to non-controlling interest	76	362	(281)	451
Net income attributable to Core Laboratories N.V.	$ 34,626	$ 63,734	$ 66,025	$ 124,798
EARNINGS PER SHARE INFORMATION:
Basic earnings per share attributable to Core Laboratories N.V. (in dollars per share)	$ 0.81	$ 1.43	$ 1.53	$ 2.79
Diluted earnings per share attributable to Core Laboratories N.V. (in dollars per share)	0.81	1.42	1.53	2.77
Cash dividends per share (in dollars per share)	$ 0.55	$ 0.50	$ 1.10	$ 1
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic	42,790	44,660	43,063	44,783
Diluted	42,959	44,910	43,214	45,045

Consolidated Statement of Other

Consolidated Statement of Other Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net income	$ 34,702	$ 64,096	$ 65,744	$ 125,249
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	735	0	(405)	0
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion	245	0	488	0
Income taxes on derivatives	367	0	367	0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	1,347	0	450	0
Amortization to net income of transition asset	(22)	(22)	(44)	(44)
Amortization to net income of prior service cost	(19)	1	(38)	3
Amortization to net income of actuarial loss	184	135	367	270
Income taxes on pension and other postretirement benefit plans	(36)	(28)	(73)	(57)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	107	86	212	172
Other Comprehensive Income (Loss), Net of Tax	1,454	86	662	172
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Comprehensive income (loss)	36,156	64,182	66,406	125,421
Comprehensive (Income) Loss, Net of Tax, Attributable to Noncontrolling Interest	76	362	(281)	451
Comprehensive income (loss) attributable to Core Laboratories N.V.	$ 36,080	$ 63,820	$ 66,687	$ 124,970

Consolidated Statement of Cash

Consolidated Statement of Cash Flows Statement - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 65,744	$ 125,249
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	10,477	10,646
Depreciation and amortization	13,496	12,951
(Increase) decrease in value of life insurance policies	(657)	(1,497)
Deferred income taxes	2,534	(4,436)
Other non-cash items	1,415	878
Changes in assets and liabilities:
Accounts receivable	41,359	261
Inventories	(4,045)	(4,824)
Prepaid expenses and other current assets	(3,078)	(10,887)
Other assets	1,752	1,219
Accounts payable	(4,594)	1,464
Accrued expenses	(100)	(3,256)
Increase (Decrease) in Deferred Revenue	3,749	957
Other long-term liabilities	(1,760)	2,508
Net cash provided by operating activities	126,292	131,233
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(12,310)	(19,787)
Patents and other intangibles	(512)	(304)
Business acquisition, net of cash acquired	(13,824)	(1,200)
Proceeds from sale of assets	833	604
Premiums on life insurance	(1,564)	(2,866)
Net cash used in investing activities	(27,377)	(23,553)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of debt borrowings	(27,000)	(37,041)
Proceeds from debt borrowings	91,000	103,000
Excess tax benefits from stock-based compensation	(315)	1,449
Debt financing costs	(279)	(3)
Non-controlling interest - dividend	0	(394)
Payments of Dividends	47,508	44,937
Repurchase of common shares	(115,583)	(125,294)
Net cash used in financing activities	(99,685)	(103,220)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(770)	4,460
CASH AND CASH EQUIVALENTS, beginning of period	23,350	25,088
CASH AND CASH EQUIVALENTS, end of period	$ 22,580	$ 29,548

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
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, 2014 (the " 2014 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, 2015 may not necessarily be indicative of the results that may be expected for the year ending December 31, 2015 . Core Laboratories N.V.'s balance sheet information for the year ended December 31, 2014 was derived from the 2014 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, 2014 . 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, 2015
Inventory Disclosure [Abstract]
Inventories	Inventories consist of the following (in thousands): June 30, December 31, Finished goods $ 34,298 $ 32,249 Parts and materials 10,817 9,147 Work in progress 2,470 1,975 Total inventories $ 47,585 $ 43,371 We include freight costs incurred for shipping inventory to customers in the Cost of product sales line of the Consolidated Statements of Operations.

Acquisitions (Notes)

Acquisitions (Notes)	6 Months Ended
	Jun. 30, 2015
Acquisitions [Abstract]
Mergers, Acquisitions and Dispositions Disclosures [Text Block]	In June 2015, we acquired a business providing additional reservoir fluids technology for $17.2 million in cash. We have accounted for this acquisition by allocating the purchase price to the net assets acquired based on their estimated fair values at the date of acquisition, resulting in an increase to goodwill of $14.3 million and an increase of $1.9 million in intangible assets. The acquisition was recorded in the Reservoir Description business segment. The acquisition of this entity did not have a material impact on our Consolidated Balance Sheet or Consolidated Statements of Operations.

Debt and Capital Lease Obligati

Debt and Capital Lease Obligations	6 Months Ended
	Jun. 30, 2015
Debt and Capital Lease Obligations [Abstract]
Debt and Capital Lease Obligations	We have no capital lease obligations. Long-term debt is summarized in the following table (in thousands): June 30, December 31, Senior notes $ 150,000 $ 150,000 Credit facility 270,000 206,000 Other Debt 1,622 — Total long-term debt 421,622 356,000 Less - current maturities of long-term debt obligations 114 — Long-term debt, net $ 421,508 $ 356,000 We have two series of senior notes outstanding with an aggregate principal amount of $150 million ("Senior Notes") issued 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. On March 13, 2015, we entered into an agreement to amend our revolving credit facility (the "Credit Facility") to increase the aggregate borrowing capacity from $350 million to $400 million and to keep the uncommitted availability of an additional $50 million to bring the total borrowings available to $450 million if certain prescribed conditions are met by the Company. The Credit Facility bears interest at variable rates from LIBOR plus 1.25% to a maximum of LIBOR plus 2.00% . Any outstanding balance under the Credit Facility is due August 29, 2019 , when the Credit Facility matures. Our available capacity at any point in time is reduced by borrowings outstanding at the time and outstanding letters of credit which totaled $26.1 million at June 30, 2015 , resulting in an available borrowing capacity under the Credit Facility of $103.9 million . In addition to those items under the Credit Facility, we had $12.5 million of outstanding letters of credit and performance guarantees and bonds from other sources as of June 30, 2015 . The terms of the Credit Facility and the Senior Notes require us to meet certain covenants, including, but not limited to, certain minimum 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. In 2014, we entered into two interest rate swap agreements for a total notional amount of $50 million . See Note 12 - Derivative Instruments and Hedging Activities . The estimated fair value of total debt at June 30, 2015 and December 31, 2014 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 Postretireme

Pensions and Other Postretirement Benefits	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
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. The following table summarizes the components of net periodic pension cost under the Dutch Plan for the three and six months ended June 30, 2015 and 2014 (in thousands): Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Service cost $ 440 $ 372 $ 903 $ 742 Interest cost 294 452 603 902 Expected return on plan assets (243 ) (335 ) (499 ) (669 ) Amortization of transition asset (22 ) (22 ) (44 ) (44 ) Amortization of prior service cost (19 ) 1 (38 ) 3 Amortization of actuarial loss 184 135 367 270 Net periodic pension cost $ 634 $ 603 $ 1,292 $ 1,204 During the six months ended June 30, 2015 , we contributed approximately $1.0 million to fund the estimated 2015 premiums on investment contracts held by the Dutch Plan. Defined Contribution Plans We maintain defined contribution plans for the benefit of eligible employees in certain countries including Canada, The Netherlands, the United Kingdom, and the United States. 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. 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, due to certain limitations imposed by the U.S. Internal Revenue Code of 1986, as amended.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
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, 2015
Equity [Abstract]
Equity	During the three months ended June 30, 2015 , we repurchased 359,732 of our common shares for $42.9 million . Included in this total were rights to 11,829 shares valued at $1.3 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, 2015 , we repurchased 1,043,022 of our common shares for $115.8 million . Included in this total were rights to 18,478 shares valued at $2.0 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. During the three and six months ended June 30, 2015 , 40,128 and 62,774 , respectively, treasury shares were distributed upon vesting of stock-based awards. At the annual meeting of shareholders on May 21, 2015, our shareholders approved the cancellation of 1,250,000 shares of our common stock then held as treasury stock. These treasury shares will be cancelled after the expiration of the waiting period required under Dutch law. In accordance with ASC 505-30-30-8, we will charge the excess of the cost of the treasury stock over its par value to additional paid-in capital and retained earnings. In February and May 2015 , we paid a quarterly dividend of $0.55 per share of common stock. In addition, on July 7, 2015 , we declared a quarterly dividend of $0.55 per share of common stock for shareholders of record on July 17, 2015 and payable on August 17, 2015 . The following table summarizes our changes in equity for the six months ended June 30, 2015 (in thousands): Common Shares Additional Paid-In Capital Retained Earnings Accumulated Treasury Stock Non-Controlling Interest Total Equity December 31, 2014 $ 1,174 $ — $ 415,906 $ (11,894 ) $ (317,613 ) $ 6,420 $ 93,993 Stock based-awards — 315 (1,611 ) — 11,773 — 10,477 Tax benefit of stock-based awards issued — (315 ) — — — — (315 ) Repurchase of common shares — — — — (115,793 ) — (115,793 ) Dividends paid — — (47,508 ) — — — (47,508 ) Amortization of deferred pension costs, net of tax — — — 212 — — 212 Interest rate swaps — — — 450 — — 450 Net income (loss) — — 66,025 — — (281 ) 65,744 June 30, 2015 $ 1,174 $ — $ 432,812 $ (11,232 ) $ (421,633 ) $ 6,139 $ 7,260 Accumulated other comprehensive income (loss) consisted of the following (in thousands): June 30, December 31, Transition asset $ 33 $ 65 Prior service cost 689 718 Unrecognized net actuarial loss (11,322 ) (11,595 ) Fair value of derivatives, net of tax (632 ) (1,082 ) Total accumulated other comprehensive income (loss) $ (11,232 ) $ (11,894 )

Earnings per Share

Earnings per Share	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
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 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, 2015 2014 2015 2014 Weighted average basic common shares outstanding 42,790 44,660 43,063 44,783 Effect of dilutive securities: Performance shares 104 111 86 105 Restricted stock 65 139 65 157 Weighted average diluted common and potential common shares outstanding 42,959 44,910 43,214 45,045

Other (Income) Expense, Net

Other (Income) Expense, Net	6 Months Ended
	Jun. 30, 2015
Other Income and Expenses [Abstract]
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, 2015 2014 2015 2014 Sale of assets $ (127 ) $ (180 ) $ (262 ) $ (298 ) Results of non-consolidated subsidiaries (36 ) (52 ) (80 ) (130 ) Foreign exchange 1,002 (1,300 ) 1,842 300 Rents and royalties (119 ) (223 ) (255 ) (447 ) Other, net 1,093 (441 ) 890 (366 ) Total other (income) expense, net $ 1,813 $ (2,196 ) $ 2,135 $ (941 ) Foreign exchange (gain) loss by currency is summarized in the following table (in thousands): Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Angola Kwanza 372 — 508 (3 ) Australian Dollar 64 69 183 62 British Pound (262 ) (222 ) 112 (274 ) Canadian Dollar (51 ) (860 ) 1,223 168 Euro 295 (50 ) (760 ) 2 Nigeria Naira 180 11 319 75 Russian Ruble 47 (136 ) (5 ) 40 Other currencies, net 357 (112 ) 262 230 Total (gain) loss $ 1,002 $ (1,300 ) $ 1,842 $ 300

Income Tax Expense

Income Tax Expense	6 Months Ended
	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Tax Expense	The effective tax rates for the three months ended June 30, 2015 and 2014 were 22.5% and 21.2% , respectively. The effective tax rates for the six months ended June 30, 2015 and 2014 were 22.7% and 22.6% , respectively. The change in tax expense is primarily the result of changes in activity levels among jurisdictions with different tax rates.

Severance and Other Charges (No

Severance and Other Charges (Notes)	6 Months Ended
	Jun. 30, 2015
Other Income and Expenses [Abstract]
Other Income and Other Expense Disclosure [Text Block]	11 . SEVERANCE AND OTHER CHARGES In response to lower commodity pricing and reduced spending by our clients related to oil and gas producing fields in 2015, we decided during the first quarter of 2015 to reduce our cost structure, primarily through a reduction in our workforce, to better align with anticipated activity levels for 2015, which is summarized below. As a result of these cost reductions, we recorded a charge of $7.1 million in the first quarter of 2015. Depending on how the market situation evolves, further actions may be necessary, which could result in additional charges in future periods. • Reduction in Force ( $6.4 million ): termination benefits expensed and paid or accrued at March 31, 2015, • Facility Exit Costs ( $0.5 million ), and • Asset Write-Offs ( $0.2 million ): write-off of assets that have no associated future cash flows. During the second quarter of 2015, we continued to closely monitor rig counts, crude oil and natural gas prices, and activity levels within the industry. We continued our reduction in force initiative which began in the first quarter of 2015, but no additional accruals or write-offs were recorded during the second quarter of 2015.

Derivative Instruments (Notes)

Derivative Instruments (Notes)	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	12 . DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES We are exposed to market risks related to fluctuations in interest rates. To mitigate these risks, we utilize derivative instruments in the form of interest rate swaps. We do not enter into derivative transactions for speculative purposes. Interest Rate Risk Our Credit Facility bears interest at variable rates from LIBOR plus 1.25% to a maximum of LIBOR plus 2.00% . We are subject to interest rate risk on the debt carried through our Credit Facility. In 2014, we entered into two interest rate swap agreements for a total notional amount of $50 million to hedge changes in the variable rate interest expense on $50 million of our existing or replacement LIBOR-priced debt. Under the first swap agreement of $25 million , we have fixed the interest rate at 2.98% through August 29, 2019 , and under the second swap agreement of $25 million , we have fixed the interest rate at 3.75% through August 29, 2024 . Each swap is measured at fair value and recorded in our Consolidated Balance Sheet as a liability. They are designated and qualify as cash flow hedging instruments and are highly effective. Unrealized gains/losses are deferred to shareholders' equity as a component of accumulated other comprehensive income/loss and are recognized in income as a decrease/increase to interest expense in the period in which the related cash flows being hedged are recognized in expense. At June 30, 2015 , we had fixed rate debt aggregating $200 million and variable rate debt aggregating $220 million , after taking into account the effect of the swaps. The fair values of outstanding derivative instruments are as follows: Fair Value of Derivatives June 30, 2015 December 31, 2014 Balance Sheet Classification Derivatives designated as hedges: 5 year interest rate swap $ 335 $ 201 Other long-term liabilities 10 year interest rate swap 664 881 Other long-term liabilities $ 999 $ 1,082 The fair value of all outstanding derivatives was determined using a model with inputs that are observable in the market (Level 2) or can be derived from or corroborated by observable data. The effect of the interest rate swaps on the Consolidated Statement of Operations was as follows: Three Months Ended Six Months Ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Income Statement Classification Derivatives designated as hedges: 5 year interest rate swap $ 98 $ — $ 195 $ — Increase to interest expense 10 year interest rate swap 147 — 293 — Increase to interest expense $ 245 $ — $ 488 $ —

Financial Instruments (Notes)

Financial Instruments (Notes)	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	13 . FINANCIAL INSTRUMENTS The Company's only financial assets and liabilities which involve fair value measures relate to certain aspects of the Company's benefit plans and our derivative instruments. We use the market approach to value certain assets and liabilities at fair value 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 quoted prices in an active market (Level 1) or 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. Gains and losses related to the fair value of the interest rate swaps are recorded in Other comprehensive income (loss). The following table summarizes the fair value balances (in thousands): Fair Value Measurement at June 30, 2015 Total Level 1 Level 2 Level 3 Assets: Deferred compensation trust assets (1) $ 24,115 $ — $ 24,115 $ — Liabilities: Deferred compensation plan $ 29,481 $ — $ 29,481 $ — 5 year interest rate swap 335 — 335 — 10 year interest rate swap 664 — 664 — $ 30,480 $ — $ 30,480 $ — Fair Value Measurement at December 31, 2014 Total Level 1 Level 2 Level 3 Assets: Deferred compensation trust assets (1) $ 24,199 $ — $ 24,199 $ — Liabilities: Deferred compensation plan $ 29,153 $ — $ 29,153 $ — 5 year interest rate swap 201 — 201 — 10 year interest rate swap 881 — 881 — $ 30,235 $ — $ 30,235 $ — (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.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Segment Reporting	We operate our business in three reportable segments. These complementary segments provide different services and products and utilize different technologies for improving reservoir performance and increasing oil and gas recovery from new and existing fields. • 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): Reservoir Description Production Enhancement Reservoir Management Corporate & Other 1 Consolidated Three Months Ended June 30, 2015 Revenue from unaffiliated clients $ 118,911 $ 70,589 $ 14,389 $ — $ 203,889 Inter-segment revenue 2,411 652 58 (3,121 ) — Segment operating income (loss) 30,944 14,376 3,452 (879 ) 47,893 Total assets (at end of period) 330,417 229,899 26,048 72,621 658,985 Capital expenditures 4,297 709 45 390 5,441 Depreciation and amortization 4,232 1,649 422 627 6,930 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 Six Months Ended June 30, 2015 Revenue from unaffiliated clients $ 240,670 $ 145,734 $ 31,128 $ — $ 417,532 Inter-segment revenue 5,187 1,369 207 (6,763 ) — Segment operating income (loss) 59,474 24,299 7,318 (481 ) 90,610 Total assets 330,417 229,899 26,048 72,621 658,985 Capital expenditures 8,734 2,512 266 798 12,310 Depreciation and amortization 8,015 3,410 853 1,218 13,496 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 (1) "Corporate & Other" represents those items that are not directly related to a particular segment and eliminations.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	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 principle 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, 2017 (on July 9, 2015, the FASB deferred the implementation date for one year). We are evaluating the impact that the adoption of this standard will have on our consolidated financial statements. In February 2015, the FASB issued ASU 2015-02 which affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under the revised consolidation model. Specifically, the amendments: (1) modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities (VIEs) or voting interest entities; (2) eliminate the presumption that a general partner should consolidate a limited partnership; (3) affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships; and (4) provide a scope exception from consolidation guidance for reporting entities with interest in legal entities that are required to comply with or operate in accordance with requirements that are similar to those for registered money market funds. This pronouncement is effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. 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, 2015
Inventory Disclosure [Abstract]
Schedule of Inventory, Current	Inventories consist of the following (in thousands): June 30, December 31, Finished goods $ 34,298 $ 32,249 Parts and materials 10,817 9,147 Work in progress 2,470 1,975 Total inventories $ 47,585 $ 43,371

Debt and Capital Lease Obliga23

Debt and Capital Lease Obligations (Tables)	6 Months Ended
	Jun. 30, 2015
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, Senior notes $ 150,000 $ 150,000 Credit facility 270,000 206,000 Other Debt 1,622 — Total long-term debt 421,622 356,000 Less - current maturities of long-term debt obligations 114 — Long-term debt, net $ 421,508 $ 356,000

Pensions and Other Postretire24

Pensions and Other Postretirement Benefits (Tables)	6 Months Ended
	Jun. 30, 2015
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, 2015 and 2014 (in thousands): Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Service cost $ 440 $ 372 $ 903 $ 742 Interest cost 294 452 603 902 Expected return on plan assets (243 ) (335 ) (499 ) (669 ) Amortization of transition asset (22 ) (22 ) (44 ) (44 ) Amortization of prior service cost (19 ) 1 (38 ) 3 Amortization of actuarial loss 184 135 367 270 Net periodic pension cost $ 634 $ 603 $ 1,292 $ 1,204

Equity (Tables)

Equity (Tables)	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Schedule of Stockholders Equity	The following table summarizes our changes in equity for the six months ended June 30, 2015 (in thousands): Common Shares Additional Paid-In Capital Retained Earnings Accumulated Treasury Stock Non-Controlling Interest Total Equity December 31, 2014 $ 1,174 $ — $ 415,906 $ (11,894 ) $ (317,613 ) $ 6,420 $ 93,993 Stock based-awards — 315 (1,611 ) — 11,773 — 10,477 Tax benefit of stock-based awards issued — (315 ) — — — — (315 ) Repurchase of common shares — — — — (115,793 ) — (115,793 ) Dividends paid — — (47,508 ) — — — (47,508 ) Amortization of deferred pension costs, net of tax — — — 212 — — 212 Interest rate swaps — — — 450 — — 450 Net income (loss) — — 66,025 — — (281 ) 65,744 June 30, 2015 $ 1,174 $ — $ 432,812 $ (11,232 ) $ (421,633 ) $ 6,139 $ 7,260
Schedule of Accumulated Other Comprehensive Income (Loss)	Accumulated other comprehensive income (loss) consisted of the following (in thousands): June 30, December 31, Transition asset $ 33 $ 65 Prior service cost 689 718 Unrecognized net actuarial loss (11,322 ) (11,595 ) Fair value of derivatives, net of tax (632 ) (1,082 ) Total accumulated other comprehensive income (loss) $ (11,232 ) $ (11,894 )

Earnings per Share (Tables)

Earnings per Share (Tables)	6 Months Ended
	Jun. 30, 2015
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, 2015 2014 2015 2014 Weighted average basic common shares outstanding 42,790 44,660 43,063 44,783 Effect of dilutive securities: Performance shares 104 111 86 105 Restricted stock 65 139 65 157 Weighted average diluted common and potential common shares outstanding 42,959 44,910 43,214 45,045

Other (Income) Expense, Net (Ta

Other (Income) Expense, Net (Tables)	6 Months Ended
	Jun. 30, 2015
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, 2015 2014 2015 2014 Angola Kwanza 372 — 508 (3 ) Australian Dollar 64 69 183 62 British Pound (262 ) (222 ) 112 (274 ) Canadian Dollar (51 ) (860 ) 1,223 168 Euro 295 (50 ) (760 ) 2 Nigeria Naira 180 11 319 75 Russian Ruble 47 (136 ) (5 ) 40 Other currencies, net 357 (112 ) 262 230 Total (gain) loss $ 1,002 $ (1,300 ) $ 1,842 $ 300
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, 2015 2014 2015 2014 Sale of assets $ (127 ) $ (180 ) $ (262 ) $ (298 ) Results of non-consolidated subsidiaries (36 ) (52 ) (80 ) (130 ) Foreign exchange 1,002 (1,300 ) 1,842 300 Rents and royalties (119 ) (223 ) (255 ) (447 ) Other, net 1,093 (441 ) 890 (366 ) Total other (income) expense, net $ 1,813 $ (2,196 ) $ 2,135 $ (941 )

Derivative Instruments (Tables)

Derivative Instruments (Tables)	6 Months Ended
	Jun. 30, 2015
Derivatives, Fair Value [Line Items]
Schedule of Derivative Liabilities at Fair Value [Table Text Block]	The fair values of outstanding derivative instruments are as follows: Fair Value of Derivatives June 30, 2015 December 31, 2014 Balance Sheet Classification Derivatives designated as hedges: 5 year interest rate swap $ 335 $ 201 Other long-term liabilities 10 year interest rate swap 664 881 Other long-term liabilities $ 999 $ 1,082

Derivative Instruments Derivati

Derivative Instruments Derivative Instruments Gain Loss Table (Tables)	6 Months Ended
	Jun. 30, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]	The effect of the interest rate swaps on the Consolidated Statement of Operations was as follows: Three Months Ended Six Months Ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Income Statement Classification Derivatives designated as hedges: 5 year interest rate swap $ 98 $ — $ 195 $ — Increase to interest expense 10 year interest rate swap 147 — 293 — Increase to interest expense $ 245 $ — $ 488 $ —

Financial Instruments (Tables)

Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements, Nonrecurring [Table Text Block]	Fair Value Measurement at June 30, 2015 Total Level 1 Level 2 Level 3 Assets: Deferred compensation trust assets (1) $ 24,115 $ — $ 24,115 $ — Liabilities: Deferred compensation plan $ 29,481 $ — $ 29,481 $ — 5 year interest rate swap 335 — 335 — 10 year interest rate swap 664 — 664 — $ 30,480 $ — $ 30,480 $ — Fair Value Measurement at December 31, 2014 Total Level 1 Level 2 Level 3 Assets: Deferred compensation trust assets (1) $ 24,199 $ — $ 24,199 $ — Liabilities: Deferred compensation plan $ 29,153 $ — $ 29,153 $ — 5 year interest rate swap 201 — 201 — 10 year interest rate swap 881 — 881 — $ 30,235 $ — $ 30,235 $ — (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.

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Summarized financial information concerning our segments is shown in the following table (in thousands): Reservoir Description Production Enhancement Reservoir Management Corporate & Other 1 Consolidated Three Months Ended June 30, 2015 Revenue from unaffiliated clients $ 118,911 $ 70,589 $ 14,389 $ — $ 203,889 Inter-segment revenue 2,411 652 58 (3,121 ) — Segment operating income (loss) 30,944 14,376 3,452 (879 ) 47,893 Total assets (at end of period) 330,417 229,899 26,048 72,621 658,985 Capital expenditures 4,297 709 45 390 5,441 Depreciation and amortization 4,232 1,649 422 627 6,930 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 Six Months Ended June 30, 2015 Revenue from unaffiliated clients $ 240,670 $ 145,734 $ 31,128 $ — $ 417,532 Inter-segment revenue 5,187 1,369 207 (6,763 ) — Segment operating income (loss) 59,474 24,299 7,318 (481 ) 90,610 Total assets 330,417 229,899 26,048 72,621 658,985 Capital expenditures 8,734 2,512 266 798 12,310 Depreciation and amortization 8,015 3,410 853 1,218 13,496 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

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Finished goods	$ 34,298	$ 32,249
Parts and materials	10,817	9,147
Work in progress	2,470	1,975
Total inventories	$ 47,585	$ 43,371

Acquisitions (Details)

Acquisitions (Details) $ in Millions	6 Months Ended
	Jun. 30, 2015USD ($)
Acquisitions [Abstract]
intangible assets acquired during period	$ 1.9
Goodwill, Acquired During Period	14.3
Cash paid for acquisition	$ 17.2

Debt and Capital Lease Obliga34

Debt and Capital Lease Obligations (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total debt	$ 421,622	$ 356,000
Less - current maturities of long-term debt and capital lease obligations	114	0
Line of credit facility, current borrowing capacity	400,000	350,000
Line of Credit Facility, Extension Capacity	50,000
Line of credit facility, maximum borrowing capacity	450,000
Performance bonds under credit facility	26,100
Line of credit facility, remaining borrowing capacity	103,900
Performance bonds	12,500
Long-term Debt, Excluding Current Maturities	421,508	356,000
Senior Notes [Member]
Debt Instrument [Line Items]
Total debt	150,000	150,000
Face amount	150,000
Line of Credit [Member]
Debt Instrument [Line Items]
Total debt	$ 270,000	$ 206,000
Maturity date	Aug. 29, 2019
Senior Notes Series A [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	4.01%
Face amount	$ 75,000
Maturity date	Sep. 30, 2021
Senior Notes Series B [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	4.11%
Face amount	$ 75,000
Maturity date	Sep. 30, 2023
Minimum [Member]
Debt Instrument [Line Items]
Basis Spread on Variable Rate	1.25%
Maximum [Member]
Debt Instrument [Line Items]
Basis Spread on Variable Rate	2.00%
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Notional Amount	$ 50,000

Pensions and Other Postretire35

Pensions and Other Postretirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract]
Service cost	$ 440	$ 372	$ 903	$ 742
Interest cost	294	452	603	902
Expected return on plan assets	(243)	(335)	(499)	(669)
Amortization of transition asset	22	22	44	44
Amortization of prior service cost	19	(1)	38	(3)
Amortization of actuarial loss	184	135	367	270
Net periodic pension cost	$ 634	$ 603	1,292	$ 1,204
Contributions by employer			$ 1,000

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	Jun. 30, 2015USD ($)
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 ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Equity [Abstract]
Treasury sock, shares, acquired	359,732
Treasury stock, value, acquired	$ 42.9
Treasury shares, acquired, tax burden	11,829
Treasury shares, acquired, value, tax burden	$ 1.3
Cash dividends per share (in dollars per share)	$ 0.55	$ 0.50	$ 1.10	$ 1
Dividends declared (in dollars per share)	$ 0.55

Equity (Details)

Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			$ 93,993
Stock based-awards			10,477
Tax benefit of stock-based awards issued			(315)
Repurchase of common shares			(115,793)
Dividends paid			(47,508)
Amortization of deferred pension costs, net of tax			212
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	$ 1,347	$ 0	450	$ 0
Net income (loss)	34,702	64,096	65,744	125,249
Net income (loss) attributable to non-controlling interest	76	$ 362	(281)	$ 451
Ending balance	7,260		7,260
Common Shares [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			1,174
Stock based-awards			0
Tax benefit of stock-based awards issued			0
Repurchase of common shares			0
Dividends paid			0
Amortization of deferred pension costs, net of tax			0
Net income (loss)			0
Ending balance	1,174		1,174
Additional Paid-In Capital [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			0
Stock based-awards			315
Tax benefit of stock-based awards issued			(315)
Repurchase of common shares			0
Dividends paid			0
Amortization of deferred pension costs, net of tax			0
Net income (loss)			0
Ending balance	0		0
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			415,906
Stock based-awards			(1,611)
Tax benefit of stock-based awards issued			0
Repurchase of common shares			0
Dividends paid			(47,508)
Amortization of deferred pension costs, net of tax			0
Net income (loss)			66,025
Ending balance	432,812		432,812
Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(11,894)
Stock based-awards			0
Tax benefit of stock-based awards issued			0
Repurchase of common shares			0
Dividends paid			0
Amortization of deferred pension costs, net of tax			212
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax			450
Net income (loss)			0
Ending balance	(11,232)		(11,232)
Treasury Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(317,613)
Stock based-awards			11,773
Tax benefit of stock-based awards issued			0
Repurchase of common shares			(115,793)
Dividends paid			0
Amortization of deferred pension costs, net of tax			0
Net income (loss)			0
Ending balance	(421,633)		(421,633)
Non-Controlling Interests [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			6,420
Stock based-awards			0
Tax benefit of stock-based awards issued			0
Repurchase of common shares			0
Dividends paid			0
Amortization of deferred pension costs, net of tax			0
Ending balance	$ 6,139		$ 6,139

Equity (Comprehensive Income) (

Equity (Comprehensive Income) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Equity [Abstract]
Prior service cost	$ 689	$ 718
Transition asset	33	65
Unrecognized net actuarial loss	(11,322)	(11,595)
Derivative, Fair Value, Net	(632)	(1,082)
Total accumulated other comprehensive income (loss)	$ (11,232)	$ (11,894)

Earnings per Share (Details)

Earnings per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Weighted average basic common shares outstanding	42,790	44,660	43,063	44,783
Performance shares (in shares)	104	111	86	105
Restricted stock (in shares)	65	139	65	157
Weighted average diluted common and potential common shares outstanding	42,959	44,910	43,214	45,045

Other (Income) Expense, Net (De

Other (Income) Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other Income and Expenses [Abstract]
Sale of assets	$ (127)	$ (180)	$ (262)	$ (298)
Results of non-consolidated subsidiaries	(36)	(52)	(80)	(130)
Foreign exchange	1,002	(1,300)	1,842	300
Rents and royalties	(119)	(223)	(255)	(447)
Other, net	1,093	(441)	890	(366)
Total other (income) expense, net	$ 1,813	$ (2,196)	$ 2,135	$ (941)

Other (Income) Expense, Net (Fo

Other (Income) Expense, Net (Foreign Currency (Gain ) Loss by Currency) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Foreign exchange	$ 1,002,000	$ (1,300,000)	$ 1,842,000	$ 300,000
Angola, Kwanza
Foreign exchange	372,000	0	508,000	(3,000)
AustralianDollar [Member]
Foreign exchange	64,000	69,000	183,000	62,000
British Pound [Member]
Foreign exchange	(262,000)	(222,000)	112,000	(274,000)
Canadian Dollar [Member]
Foreign exchange	(51,000)	(860,000)	1,223,000	168,000
Euro [Member]
Foreign exchange	295,000	(50,000)	(760,000)	2,000
Nigeria, Nairas
Foreign exchange	180,000	11,000	319,000	75,000
Russian Ruble [Member]
Foreign exchange	47,000	(136,000)	(5,000)	40,000
Other Currencies Net [Member]
Foreign exchange	$ 357,000	$ (112,000)	$ 262,000	$ 230,000

Income Tax Expense (Details)

Income Tax Expense (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate	22.50%	21.20%	22.70%	22.60%

Severance and Other Charges (De

Severance and Other Charges (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Other Income and Expenses [Abstract]
Severance and other charges	$ 7,090	$ 0
Severance Costs	(6,400)
Business Exit Costs	(500)
Asset write-offs	$ (200)

Derivative Instruments (Details

Derivative Instruments (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	$ 999	$ 1,082
Derivative, Notional Amount	50,000
Interest Rate Swap No. 1 [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	664	881
Derivative, Notional Amount	$ 25,000
Derivative, Fixed Interest Rate	3.75%
Derivative, Maturity Date	Aug. 29, 2024
Interest Rate Swap No. 2 [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	$ 335	$ 201
Derivative, Notional Amount	$ 25,000
Derivative, Fixed Interest Rate	2.98%
Derivative, Maturity Date	Aug. 29, 2019

Derivative Instruments Long-ter

Derivative Instruments Long-term debt (Details) $ in Millions	Jun. 30, 2015USD ($)
Debt Disclosure in Derivatives Footnote [Abstract]
Long-term Debt, Percentage Bearing Variable Interest, Amount	$ 220
Long-term Debt, Percentage Bearing Fixed Interest, Amount	$ 200

Derivative Instruments Deriva47

Derivative Instruments Derivative gain loss table (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	$ 245	$ 0	$ 488	$ 0
Interest Rate Swap No. 1 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	147	0	293	0
Interest Rate Swap No. 2 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	$ 98	$ 0	$ 195	$ 0

Financial Instruments FInancial

Financial Instruments FInancial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 24,115	$ 24,199
Deferred Compensation Liability, Current and Noncurrent	29,481	29,153
Financial and Nonfinancial Liabilities, Fair Value Disclosure	30,480	30,235
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Deferred Compensation Liability, Current and Noncurrent	0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	24,115	24,199
Deferred Compensation Liability, Current and Noncurrent	29,481	29,153
Financial and Nonfinancial Liabilities, Fair Value Disclosure	30,480	30,235
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Deferred Compensation Liability, Current and Noncurrent	0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	0
Interest Rate Swap No. 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	335	201
Interest Rate Swap No. 2 [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	0	0
Interest Rate Swap No. 2 [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	335	201
Interest Rate Swap No. 2 [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	0	0
Interest Rate Swap No. 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	664	881
Interest Rate Swap No. 1 [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	0	0
Interest Rate Swap No. 1 [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	664	881
Interest Rate Swap No. 1 [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	$ 0	$ 0

Segment Reporting (Details)

Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenue from unaffiliated clients	$ 203,889	$ 267,562	$ 417,532	$ 530,465
Inter-segment revenue	0	0	0	0
Segment operating income (loss)	47,893	84,134	90,610	166,961
Total assets (at end of period)	658,985	689,128	658,985	689,128	$ 675,653
Capital expenditures	5,441	12,119	12,310	19,787
Depreciation and amortization	6,930	6,318	13,496	12,951
Operating Segments [Member] | Reservoir Description [Member]
Segment Reporting Information [Line Items]
Revenue from unaffiliated clients	118,911	130,589	240,670	255,845
Inter-segment revenue	2,411	2,763	5,187	5,532
Segment operating income (loss)	30,944	36,341	59,474	71,194
Total assets (at end of period)	330,417	318,370	330,417	318,370
Capital expenditures	4,297	6,280	8,734	11,096
Depreciation and amortization	4,232	3,935	8,015	7,783
Operating Segments [Member] | Production Enhancement [Member]
Segment Reporting Information [Line Items]
Revenue from unaffiliated clients	70,589	110,993	145,734	221,273
Inter-segment revenue	652	384	1,369	1,181
Segment operating income (loss)	14,376	37,660	24,299	74,862
Total assets (at end of period)	229,899	264,784	229,899	264,784
Capital expenditures	709	1,755	2,512	2,830
Depreciation and amortization	1,649	1,880	3,410	3,775
Operating Segments [Member] | Reservoir Management [Member]
Segment Reporting Information [Line Items]
Revenue from unaffiliated clients	14,389	25,980	31,128	53,347
Inter-segment revenue	58	347	207	767
Segment operating income (loss)	3,452	9,794	7,318	20,268
Total assets (at end of period)	26,048	39,795	26,048	39,795
Capital expenditures	45	282	266	367
Depreciation and amortization	422	366	853	605
Corporate & Other [Member]
Segment Reporting Information [Line Items]
Revenue from unaffiliated clients	0	0	0	0
Inter-segment revenue	(3,121)	(3,494)	(6,763)	(7,480)
Segment operating income (loss)	(879)	339	(481)	637
Total assets (at end of period)	72,621	66,179	72,621	66,179
Capital expenditures	390	3,802	798	5,494
Depreciation and amortization	$ 627	$ 137	$ 1,218	$ 788