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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2013	Jul. 29, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	FORUM ENERGY TECHNOLOGIES, INC.
Entity Central Index Key	0001401257
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		92,412,032

Condensed statements of comprehensive income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net sales	$ 367,887	$ 373,512	$ 740,886	$ 737,001
Cost of sales	253,404	250,710	511,597	487,756
Gross profit	114,483	122,802	229,289	249,245
Operating expenses
Selling, general and administrative expenses	65,654	56,205	131,103	111,059
Contingent consideration expense	0	(4,900)	0	(3,900)
Impairment of intangible assets	0	1,161	0	1,161
Transaction expenses	1,806	442	1,815	797
Loss (gain) on sale of assets and other	(115)	56	20	77
Total operating expenses	67,345	52,964	132,938	109,194
Operating income	47,138	69,838	96,351	140,051
Other expense (income)
Interest expense	3,111	3,623	6,474	9,409
Foreign exchange (gains) losses and other, net	1,019	335	(448)	366
Total other expense	4,130	3,958	6,026	9,775
Income before income taxes	43,008	65,880	90,325	130,276
Provision for income tax expense	13,068	21,742	28,447	43,627
Net income	29,940	44,138	61,878	86,649
Less: Income attributable to noncontrolling interest	21	17	19	46
Net income attributable to common stockholders	$ 29,919	$ 44,121	$ 61,859	$ 86,603
Weighted average shares outstanding
Basic (in shares)	91,032	82,495	89,790	75,248
Diluted (in shares)	94,606	89,794	94,501	81,990
Earnings per share
Basic (in dollars per share)	$ 0.33	$ 0.53	$ 0.69	$ 1.15
Diluted (in dollars per share)	$ 0.32	$ 0.49	$ 0.65	$ 1.06
Other comprehensive income, net of tax:
Net income	$ 29,940	$ 44,138	$ 61,878	$ 86,649
Change in foreign currency translation, net of tax of $0	(2,154)	(6,740)	(24,903)	3,767
Comprehensive income	27,786	37,398	36,975	90,416
Less: comprehensive loss (income) attributable to noncontrolling interests	20	28	82	(36)
Comprehensive income attributable to common stockholders	$ 27,806	$ 37,426	$ 37,057	$ 90,380

Condensed consolidated statements of comprehensive income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Change in foreign currency translation, tax	$ 0	$ 0	$ 0	$ 0

Condensed consolidated balance sheets - USD ($) $ in Thousands	Jun. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 199,480	$ 41,063
Accounts receivable—trade, net	245,668	228,947
Inventories	425,085	455,129
Prepaid expenses and other current assets	15,281	12,744
Costs and estimated profits in excess of billings	17,200	6,551
Deferred income taxes, net	31,898	30,443
Total current assets	934,612	774,877
Property and equipment, net of accumulated depreciation	162,594	152,983
Deferred financing costs, net	6,985	8,045
Intangibles	244,519	257,419
Goodwill	684,375	695,799
Other long-term assets	4,135	3,857
Total assets	2,037,220	1,892,980
Current liabilities
Current portion of long-term debt	26,338	20,504
Accounts payable—trade	97,481	98,990
Accrued liabilities	86,434	93,701
Contingent consideration liability	0	15,664
Deferred revenue	28,709	33,720
Billings in excess of costs and profits recognized	22,547	17,582
Derivative instruments	115	714
Total current liabilities	261,624	280,875
Long-term debt, net of current portion	504,207	400,201
Deferred income taxes, net	54,357	49,749
Other long-term liabilities	81	0
Total liabilities	820,269	730,825
Commitments and contingencies
Equity
Common stock, $0.01 par value, 296,000,000 shares authorized, 92,373,751 and 87,543,173 shares issued	924	875
Additional paid-in capital	808,616	764,635
Treasury stock at cost, 3,397,097 and 3,377,599 shares	(26,464)	(25,933)
Warrants	716	26,394
Retained earnings	457,460	395,601
Accumulated other comprehensive loss	(24,902)	(100)
Total stockholders’ equity	1,216,350	1,161,472
Noncontrolling interest in subsidiary	601	683
Total equity	1,216,951	1,162,155
Total liabilities and equity	$ 2,037,220	$ 1,892,980

Condensed consolidated balance sheets (Parenthetical) - $ / shares	Jun. 30, 2013	Dec. 31, 2012
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	296,000,000	296,000,000
Common Stock, shares issued	92,373,751	87,543,173
Treasury Stock, shares, at cost	3,397,097	3,377,599

Condensed consolidated statements of cash flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities
Net income	$ 61,878	$ 86,649
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation expense	17,191	15,030
Amortization of intangible assets	11,060	10,075
Payment of contingent consideration included in operating activities	0	(7,127)
Share-based compensation expense	8,173	3,161
Change in contingent consideration	0	(3,900)
Deferred income taxes	3,153	1,194
Impairment of intangible assets	0	1,161
Other	907	1,558
Changes in operating assets and liabilities
Accounts receivable—trade	(20,325)	(24,121)
Inventories	23,905	(77,531)
Prepaid expenses and other current assets	(2,840)	5,798
Accounts payable, deferred revenue and other accrued liabilities	(8,362)	19,581
Billings in excess of costs and estimated profits earned, net	(5,285)	(6,476)
Net cash provided by operating activities	89,455	25,052
Cash flows from investing activities
Acquisition of businesses, net of cash acquired	(2,611)	(2,839)
Capital expenditures for property and equipment	(30,065)	(25,137)
Proceeds from sale of property and equipment	382	2,678
Net cash used in investing activities	(32,294)	(25,298)
Cash flows from financing activities
Borrowings on long-term debt	177,923	78,464
Repayment of long-term debt	(68,083)	(383,797)
Proceeds of IPO, net of offering costs	0	256,880
Proceeds from concurrent private placement	0	50,000
Payment of contingent consideration	(11,435)	(11,100)
Excess tax benefits from stock based compensation	2,791	89
Repurchases of stock	(531)	0
Proceeds from stock issuance	3,314	3,991
Deferred financing costs	(13)	(15)
Net cash provided by (used in) financing activities	103,966	(5,488)
Effect of exchange rate changes on cash	(2,710)	(12)
Net increase (decrease) in cash and cash equivalents	158,417	(5,746)
Cash and cash equivalents
Beginning of period	41,063	20,548
End of period	199,480	14,802
Noncash investing and financing activities
Payment of contingent consideration via stock	4,075	3,341
Insurance policy financed through notes payable	$ 0	$ 6,348

Organization and basis of presentation	6 Months Ended
Organization and basis of presentation	Jun. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and basis of presentation	Organization and basis of presentation Forum Energy Technologies, Inc. (the "Company"), a Delaware corporation, is a global oilfield products company, serving the subsea, drilling, completion, production and infrastructure sectors of the oil and natural gas industry. The Company designs and manufactures products, and engages in aftermarket services, parts supply and related services that complement the Company’s product offering. Basis of presentation The accompanying unaudited condensed consolidated financial statements of the Company include the accounts of the Company and its subsidiaries. All significant intercompany transactions have been eliminated in consolidation. In the opinion of management, all adjustments, consisting of normal recurring adjustments, necessary for the fair statement of the Company's financial position, results of operations and cash flows have been included. Operating results for the six months ended June 30, 2013 are not necessarily indicative of the results that may be expected for the year ended December 31, 2013 or any other interim period. These interim financial statements are unaudited and have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC") regarding interim financial reporting. Accordingly, they do not include all of the information and notes required by accounting principles generally accepted in the United States of America ("GAAP") for complete consolidated financial statements and should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2012, which are included in the Company’s 2012 Annual Report on Form 10-K filed with the SEC on March 5, 2013 (the "Annual Report").

- Definition

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

+ References

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-Name Statement of Position (SOP)
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-Name Accounting Research Bulletin (ARB)
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+ Details

Recent accounting pronouncements	6 Months Ended
Recent accounting pronouncements	Jun. 30, 2013
Accounting Policies [Abstract]
Recent accounting pronouncements	Recent accounting pronouncements From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board ("FASB"), which are adopted by the Company as of the specified effective date. Unless otherwise discussed, management believes that the impact of recently issued standards, which are not yet effective, will not have a material impact on the Company’s consolidated financial statements upon adoption. In December 2011, the FASB issued Accounting Standards Update ("ASU") 2011-11— "Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities" ("ASU 2011-11") and in January 2013, the FASB issued ASU 2013-01— "Balance Sheet (Topic 210): Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities" ("ASU 2013-01"). The issuance of ASU 2013-01 limited the scope of ASU 2011-11 to derivatives, repurchase agreements and securities lending transactions to the extent that they are offset in the financial statements or subject to an enforceable master netting or similar agreement. The Company adopted this update effective January 1, 2013 and it did not have a material impact on the condensed consolidated financial statements. In February 2013, the FASB issued an update to existing guidance on the presentation of comprehensive income. This update requires disclosure of significant amounts reclassified out of accumulated other comprehensive income by component and their corresponding effect on the respective line items of net income. The Company adopted this update effective January 1, 2013 with the appropriate disclosures and it did not have a material impact on the condensed consolidated financial statements. In July 2012, the FASB amended the Intangibles — Goodwill and Other Topic (Topic 350) of the Accounting Standards Codification that allows entities to make a qualitative assessment of whether it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount. If, after assessing the relevant information, an entity determines it is more likely than not that the fair value is more than the carrying amount, no additional work is necessary. If an entity determines it is more likely than not that the fair value is less than the carrying amount, then the entity is required to proceed to the quantitative approach. The amended guidance is effective for the Company in the annual test in the fourth quarter of 2013 and adoption is not expected to impact consolidated financial condition or results of operations.

Acquisitions

6 Months Ended

Jun. 30, 2013

Business Combinations [Abstract]

Acquisitions

2013 Acquisitions

Effective July 1, 2013, the Company completed the following three acquisitions for aggregate consideration of approximately $232.0 million:


•	Blohm + Voss Oil Tools GmbH and related entities ("B+V"), a manufacturer of pipe handling equipment used on offshore and onshore drilling rigs with locations in Hamburg, Germany and Willis, Texas. B+V will be included in the Drilling & Subsea segment;


•	Moffat 2000 Ltd. ("Moffat"), a Newcastle, England based manufacturer of subsea pipeline inspection gauge launching and receiving systems, and subsea connectors. Moffat will be included in the Drilling & Subsea segment; and


•	The joint purchase of Global Tubing, LLC ("Global Tubing") with an equal partner, with management retaining a small interest. Global Tubing is a Dayton, Texas based provider of coiled tubing strings and related services. The Company's equity investment will be reported in the Production & Infrastructure segment and will be accounted for using the equity method of accounting.

2012 Acquisitions

The Company completed four acquisitions in the fourth quarter 2012 for aggregate consideration of $139.5 million. These acquisitions, all of which are included in the Drilling & Subsea segment, included:


•	Syntech Technology, Inc. ("Syntech"), a Lorton, Virgina based manufacturer of syntactic foam buoyancy materials used for ROVs and other deepwater flotation applications;


•	Wireline Solutions, LLC ("Wireline"), a Sanger, Texas based manufacturer of downhole completion tools, including composite plugs used for plug, perforate and fracture applications and wireline flow control products;


•	Dynacon, Inc. ("Dynacon"), a Bryan, Texas based provider of launch and recovery systems used for the deployment of ROVs and high quality specialized cable and umbilical handling equipment; and


•	Merrimac Manufacturing, Inc. ("Merrimac"), a Plantersville, Texas based manufacturer of consumable parts for drilling, well servicing and pressure pumping applications, including mud pump parts, power swivel parts and valves and seats for hydraulic fracturing pumps.

Contingent consideration from 2011 acquisitions

The total purchase consideration for two acquisitions completed in 2011, Wood Flowline Products, LLC ("WFP") and Phoinix Global, LLC ("Phoinix"), included two separate contingent consideration payments based on the acquired company's 2011 and 2012 calendar year earnings as defined in the purchase and sale agreements. The contingent consideration payment related to the WFP acquisition included a portion payable in shares. Upon resolution of the results of operations for WFP for the year ended December 31, 2011, the portion of the contingent consideration payable in shares of the Company's common stock was finalized and $3.3 million was reclassified to equity in March 2012. The cash portion of the contingent consideration payments based on WFP and Phoinix's 2011 earnings in the amount of $6.1 million and $12.1 million, respectively, were paid during the quarter ended June 30, 2012.

Upon resolution of the results of operations for WFP for the year ended December 31, 2012, the portion of the contingent consideration payable in shares of the Company's common stock was finalized and $4.1 million was reclassified to equity in May 2013. The cash portion of the contingent consideration payments based on WFP and Phoinix's 2012 earnings in the amount of $3.5 million and $7.9 million, respectively, were paid during the quarter ended June 30, 2013.

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Inventories

6 Months Ended

Jun. 30, 2013

Inventory Disclosure [Abstract]

Inventories

The Company's significant components of inventory at June 30, 2013 and December 31, 2012 were as follows (in thousands):



	June 30, 2013			December 31, 2012
Raw materials and parts	$	131,510		$	145,970
Work in process	78,880			86,558
Finished goods	235,615			243,726
Gross inventories	446,005			476,254
Inventory reserve	(20,920		)	(21,125		)
Inventories	$	425,085		$	455,129

Goodwill and intangible assets

6 Months Ended

Jun. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and intangible assets

Goodwill

The changes in the carrying amount of goodwill from January 1, 2013 to June 30, 2013, were as follows (in thousands):



	Drilling & Subsea			Production & Infrastructure			Total
Goodwill Balance at January 1, 2013 net	$	616,520		$	79,279		$	695,799
Purchase accounting adjustment	97			—			97
Impact of non-U.S. local currency translation	(11,254		)	(267		)	(11,521		)
Goodwill Balance at June 30, 2013 net	$	605,363		$	79,012		$	684,375

Intangible assets

Intangible assets consisted of the following as of June 30, 2013 and December 31, 2012, respectively (in thousands):



	June 30, 2013
	Gross carrying amount		Accumulated amortization			Net amortizable intangibles		Amortization period (in years)
Customer relationships	$	237,536	$	(55,406	)	$	182,130	4-15
Patents and technology	19,703		(5,179		)	14,524		5-17
Non-compete agreements	5,793		(4,729		)	1,064		3-6
Trade names	39,612		(9,549		)	30,063		10-15
Distributor relationships	22,160		(10,652		)	11,508		8-15
Trademark	5,230		—			5,230		Indefinite
Intangible Assets Total	$	330,034	$	(85,515	)	$	244,519



	December 31, 2012
	Gross carrying amount		Accumulated amortization			Net amortizable intangibles		Amortization period (in years)
Customer relationships	$	241,358	$	(49,766	)	$	191,592	4-15
Patents and technology	19,780		(4,360		)	15,420		5-17
Non-compete agreements	5,880		(4,420		)	1,460		3-6
Trade names	40,255		(8,680		)	31,575		10-15
Distributor relationships	22,160		(10,018		)	12,142		8-15
Trademark	5,230		—			5,230		Indefinite
Intangible Assets Total	$	334,663	$	(77,244	)	$	257,419

- Definition

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

+ References + Details

Debt

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

Debt

Notes payable and lines of credit as of June 30, 2013 and December 31, 2012 consisted of the following (in thousands):



	June 30, 2013			December 31, 2012
Senior secured revolving credit facility	$	241,500		$	122,480
Term loan	288,750			296,250
Other debt	295			1,975
Total debt	530,545			420,705
Less: current maturities	(26,338		)	(20,504		)
Long-term debt	$	504,207		$	400,201

The Company has a senior secured credit facility ("Credit Facility") with several financial institutions as lenders, which provides for a $600.0 million revolving credit facility with up to $75.0 million available for letters of credit and up to $25.0 million in swingline loans, and a term loan with an outstanding balance of $288.8 million at June 30, 2013. The Credit Facility matures in October 2016. Weighted average interest rates under the Credit Facility (without the effect of hedging) at June 30, 2013 and December 31, 2012 were 2.20% and 2.21%, respectively.

Availability under the Credit Facility was approximately $346.1 million at June 30, 2013. There have been no changes to the financial covenants disclosed in Item 7 of the Annual Report and the Company was in compliance with all financial covenants at June 30, 2013.

Other debt

Other debt consists primarily of upfront annual insurance premiums that have been financed.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References + Details

Income taxes	6 Months Ended
Income taxes	Jun. 30, 2013
Income Tax Disclosure [Abstract]
Income taxes	Income taxes The Company's effective tax rate for the six months ended June 30, 2013 and 2012 was 31.5% and 33.5%, respectively. The tax provision for the second quarter of 2013 is lower than the comparable period in 2012 primarily due to a higher proportion of our earnings outside the United States in jurisdictions subject to lower tax rates. The effective tax rate can vary from period to period depending on the relative mix of U.S. and non-U.S. earnings.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

+ Details

Fair value measurements	6 Months Ended
Fair value measurements	Jun. 30, 2013
Fair Value Disclosures [Abstract]
Fair value measurements	Fair value measurements The Company has interest rate swaps with a total notional amount of $75.0 million that were executed to provide an economic hedge against the interest rate risk exposure. These swaps were not designated for hedge accounting at inception and are recorded at fair value, which is measured using the market approach valuation technique. These swaps have a fixed rate of 1.83% and expire in August 2013. The realized gains and losses are included in interest expense in the condensed consolidated statements of comprehensive income. At June 30, 2013 and December 31, 2012, the fair value of the swap agreements was recorded as a short-term liability of $0.1 million and $0.7 million, respectively. In connection with the acquisitions of WFP and Phoinix, the total consideration included contingent consideration payments. The fair value of the contingent consideration for these acquisitions was estimated at the time of the respective acquisitions based on internal valuations of the earnings levels that the acquired companies were expected to achieve. The fair value was re-measured quarterly until finalized as of December 31, 2012 upon resolution of the 2012 calendar year earnings and the fair values are no longer variable after that time. These amounts were paid out during the quarter ended June 30, 2013. Refer to Note 3, Acquisitions, for further discussion. At June 30, 2013, the carrying value of the Company's Credit Facility was $530.3 million. Substantially all of the debt incurs interest at a variable interest rate and, therefore, the carrying amount approximates fair value. The fair value of the debt is classified as a Level 2 measurement because interest rates charged are similar to other financial instruments with similar terms and maturities. There were no other outstanding financial assets as of June 30, 2013 and December 31, 2012 that required measuring the amounts at fair value on a recurring basis. The Company did not change its valuation techniques associated with recurring fair value measurements from prior periods and there were no transfers between levels of the fair value hierarchy during the six months ended June 30, 2013.

- Definition

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

+ References

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+ Details

Business segments

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Business segments

The Company’s operations are divided into the following two operating segments, which are our reportable segments: Drilling & Subsea ("D&S") and Production & Infrastructure ("P&I"). The amounts indicated below as "Corporate" relate to costs and assets not allocated to the reportable segments. Summary financial data by segment follows (in thousands):



	Three months ended June 30,						Six months ended June 30,
	2013			2012			2013			2012
Revenue:
Drilling & Subsea	$	209,198		$	222,651		$	431,137		$	435,715
Production & Infrastructure	158,905			151,080			310,115			301,675
Intersegment eliminations	(216		)	(219		)	(366		)	(389		)
Total Revenue	$	367,887		$	373,512		$	740,886		$	737,001

Operating income:
Drilling & Subsea	$	32,906		$	46,382		$	68,062		$	92,378
Production & Infrastructure	22,824			24,859			44,198			54,551
Corporate	(6,901		)	(4,644		)	(14,074		)	(8,743		)
Total segment operating income	48,829			66,597			98,186			138,186
Contingent consideration expense	—			(4,900		)	—			(3,900		)
Intangible asset impairment	—			1,161			—			1,161
Transaction expenses	1,806			442			1,815			797
Loss (gain) on sale of assets and other	(115		)	56			20			77
Income from operations	$	47,138		$	69,838		$	96,351		$	140,051

A summary of consolidated assets by reportable segment is as follows (in thousands):



	June 30, 2013		December 31, 2012
Assets
Drilling & Subsea	$	1,420,287	$	1,413,944
Production & Infrastructure	425,212		435,496
Corporate	191,721		43,540
Total assets	$	2,037,220	$	1,892,980

- Definition

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

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+ Details

Earnings per share

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Earnings per share

The calculation of basic and diluted earnings per share for each period presented was as follows (dollars and shares in thousands, except per share amounts):



	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Net Income attributable to common stockholders	$	29,919	$	44,121	$	61,859	$	86,603

Average shares outstanding (basic)	91,032		82,495		89,790		75,248
Common stock equivalents	3,574		7,299		4,711		6,742
Diluted shares	94,606		89,794		94,501		81,990
Earnings per share
Basic earnings per share	$	0.33	$	0.53	$	0.69	$	1.15
Diluted earnings per share	$	0.32	$	0.49	$	0.65	$	1.06

The diluted earnings per share calculation excludes approximately 0.3 million and 1.2 million stock options for the three months ended June 30, 2013 and 2012, respectively, and 0.2 million and 0.8 million stock options for the six months ended June 30, 2013 and 2012, respectively, because they were anti-dilutive as the option exercise price was greater than the average market price of the common stock.

Commitments and contingencies	6 Months Ended
Commitments and contingencies	Jun. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	Commitments and contingencies In the ordinary course of business, the Company is, and in the future, could be involved in various pending or threatened legal actions, some of which may or may not be covered by insurance. Management has reviewed such pending judicial and legal proceedings, the reasonably anticipated costs and expenses in connection with such proceedings, and the availability and limits of insurance coverage, and has established reserves that are believed to be appropriate in light of those outcomes that are considered to be probable and can be reasonably estimated. The reserves accrued at June 30, 2013 and 2012, respectively, are immaterial. In the opinion of management, the Company's ultimate liability, if any, with respect to these actions is not expected to have a material adverse effect on the Company’s financial position, results of operations or cash flows.

Stockholders' equity	6 Months Ended
Stockholders' equity	Jun. 30, 2013
Equity [Abstract]
Stockholders' equity	Stockholders' equity Warrants During the six months ended June 30, 2013, the Company's largest shareholder converted all of its 6,366,072 warrants pursuant to the terms of a warrant agreement and received 4,227,358 shares the Company's common stock. As of June 30, 2013, approximately 370,000 warrants remained outstanding and were recorded to stockholders' equity at their fair value of $1.94 per warrant, which was determined at the time of issuance. The remaining warrants expire the earlier of October 11, 2014 or upon the occurrence of certain other events. Share-based compensation During the six months ended June 30, 2013, the Company granted 342,880 options and 492,140 restricted stock and restricted stock units, which includes 110,720 performance share awards with a market condition. The stock options were granted on February 21, 2013 with an exercise price of $26.05. Of the restricted stock and restricted stock units granted, 359,820 vest ratably over four years on the anniversary of the grant date. On February 21, 2013, 21,600 restricted stock and restricted stock units were granted to the non-employee members of the Board of Directors, which have a thirteen month vesting period from the date of grant. The performance share awards granted may settle for between zero and two shares of the Company's common stock. The number of shares issued pursuant to the performance share awards will be determined based on the total shareholder return of the Company's common stock as compared to a group of peer companies, measured annually over a three-year performance period.

- Definition

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

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-URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Section B
-Paragraph 7, 11A
-Chapter 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

Reference 18: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 20: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 21: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

Reference 22: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 3, 4, 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 23: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

Related party transactions	6 Months Ended
Related party transactions	Jun. 30, 2013
Related Party Transactions [Abstract]
Related party transactions	Related party transactions The Company entered into lease agreements for office and warehouse space with former owners of acquired companies or affiliates of a director. The dollar amounts related to these related party activities are not significant to the Company’s consolidated financial statements. The Company purchased inventory, services and fixed assets from an affiliate of a director in amounts totaling $3.5 million and $2.4 million during the six months ended June 30, 2013 and 2012, respectively. The Company sold $0.6 million and $1.0 million of equipment and services to an affiliate of a director during the six months ended June 30, 2013 and 2012, respectively.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph b
-Article 3A

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph k
-Article 4

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 57
-Paragraph 1-4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Recent accounting pronouncements (Policies)	6 Months Ended
Recent accounting pronouncements (Policies)	Jun. 30, 2013
Accounting Policies [Abstract]
Recent accounting pronouncements	From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board ("FASB"), which are adopted by the Company as of the specified effective date. Unless otherwise discussed, management believes that the impact of recently issued standards, which are not yet effective, will not have a material impact on the Company’s consolidated financial statements upon adoption. In December 2011, the FASB issued Accounting Standards Update ("ASU") 2011-11— "Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities" ("ASU 2011-11") and in January 2013, the FASB issued ASU 2013-01— "Balance Sheet (Topic 210): Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities" ("ASU 2013-01"). The issuance of ASU 2013-01 limited the scope of ASU 2011-11 to derivatives, repurchase agreements and securities lending transactions to the extent that they are offset in the financial statements or subject to an enforceable master netting or similar agreement. The Company adopted this update effective January 1, 2013 and it did not have a material impact on the condensed consolidated financial statements. In February 2013, the FASB issued an update to existing guidance on the presentation of comprehensive income. This update requires disclosure of significant amounts reclassified out of accumulated other comprehensive income by component and their corresponding effect on the respective line items of net income. The Company adopted this update effective January 1, 2013 with the appropriate disclosures and it did not have a material impact on the condensed consolidated financial statements. In July 2012, the FASB amended the Intangibles — Goodwill and Other Topic (Topic 350) of the Accounting Standards Codification that allows entities to make a qualitative assessment of whether it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount. If, after assessing the relevant information, an entity determines it is more likely than not that the fair value is more than the carrying amount, no additional work is necessary. If an entity determines it is more likely than not that the fair value is less than the carrying amount, then the entity is required to proceed to the quantitative approach. The amended guidance is effective for the Company in the annual test in the fourth quarter of 2013 and adoption is not expected to impact consolidated financial condition or results of operations.

Inventories (Tables)

6 Months Ended

Jun. 30, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory

The Company's significant components of inventory at June 30, 2013 and December 31, 2012 were as follows (in thousands):



	June 30, 2013			December 31, 2012
Raw materials and parts	$	131,510		$	145,970
Work in process	78,880			86,558
Finished goods	235,615			243,726
Gross inventories	446,005			476,254
Inventory reserve	(20,920		)	(21,125		)
Inventories	$	425,085		$	455,129

Goodwill and intangible assets (Tables)

6 Months Ended

Jun. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill from January 1, 2013 to June 30, 2013, were as follows (in thousands):



	Drilling & Subsea			Production & Infrastructure			Total
Goodwill Balance at January 1, 2013 net	$	616,520		$	79,279		$	695,799
Purchase accounting adjustment	97			—			97
Impact of non-U.S. local currency translation	(11,254		)	(267		)	(11,521		)
Goodwill Balance at June 30, 2013 net	$	605,363		$	79,012		$	684,375

Summary of Intangible Assets

Intangible assets consisted of the following as of June 30, 2013 and December 31, 2012, respectively (in thousands):



	June 30, 2013
	Gross carrying amount		Accumulated amortization			Net amortizable intangibles		Amortization period (in years)
Customer relationships	$	237,536	$	(55,406	)	$	182,130	4-15
Patents and technology	19,703		(5,179		)	14,524		5-17
Non-compete agreements	5,793		(4,729		)	1,064		3-6
Trade names	39,612		(9,549		)	30,063		10-15
Distributor relationships	22,160		(10,652		)	11,508		8-15
Trademark	5,230		—			5,230		Indefinite
Intangible Assets Total	$	330,034	$	(85,515	)	$	244,519



	December 31, 2012
	Gross carrying amount		Accumulated amortization			Net amortizable intangibles		Amortization period (in years)
Customer relationships	$	241,358	$	(49,766	)	$	191,592	4-15
Patents and technology	19,780		(4,360		)	15,420		5-17
Non-compete agreements	5,880		(4,420		)	1,460		3-6
Trade names	40,255		(8,680		)	31,575		10-15
Distributor relationships	22,160		(10,018		)	12,142		8-15
Trademark	5,230		—			5,230		Indefinite
Intangible Assets Total	$	334,663	$	(77,244	)	$	257,419

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References + Details

Debt (Tables)

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

Schedule of Debt

Notes payable and lines of credit as of June 30, 2013 and December 31, 2012 consisted of the following (in thousands):



	June 30, 2013			December 31, 2012
Senior secured revolving credit facility	$	241,500		$	122,480
Term loan	288,750			296,250
Other debt	295			1,975
Total debt	530,545			420,705
Less: current maturities	(26,338		)	(20,504		)
Long-term debt	$	504,207		$	400,201

Business segments (Tables)

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Summary financial data by segment follows (in thousands):



	Three months ended June 30,						Six months ended June 30,
	2013			2012			2013			2012
Revenue:
Drilling & Subsea	$	209,198		$	222,651		$	431,137		$	435,715
Production & Infrastructure	158,905			151,080			310,115			301,675
Intersegment eliminations	(216		)	(219		)	(366		)	(389		)
Total Revenue	$	367,887		$	373,512		$	740,886		$	737,001

Operating income:
Drilling & Subsea	$	32,906		$	46,382		$	68,062		$	92,378
Production & Infrastructure	22,824			24,859			44,198			54,551
Corporate	(6,901		)	(4,644		)	(14,074		)	(8,743		)
Total segment operating income	48,829			66,597			98,186			138,186
Contingent consideration expense	—			(4,900		)	—			(3,900		)
Intangible asset impairment	—			1,161			—			1,161
Transaction expenses	1,806			442			1,815			797
Loss (gain) on sale of assets and other	(115		)	56			20			77
Income from operations	$	47,138		$	69,838		$	96,351		$	140,051

A summary of consolidated assets by reportable segment is as follows (in thousands):



	June 30, 2013		December 31, 2012
Assets
Drilling & Subsea	$	1,420,287	$	1,413,944
Production & Infrastructure	425,212		435,496
Corporate	191,721		43,540
Total assets	$	2,037,220	$	1,892,980

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References + Details

Earnings per share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The calculation of basic and diluted earnings per share for each period presented was as follows (dollars and shares in thousands, except per share amounts):



	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Net Income attributable to common stockholders	$	29,919	$	44,121	$	61,859	$	86,603

Average shares outstanding (basic)	91,032		82,495		89,790		75,248
Common stock equivalents	3,574		7,299		4,711		6,742
Diluted shares	94,606		89,794		94,501		81,990
Earnings per share
Basic earnings per share	$	0.33	$	0.53	$	0.69	$	1.15
Diluted earnings per share	$	0.32	$	0.49	$	0.65	$	1.06

Acquisitions (Details) $ in Millions	1 Months Ended			3 Months Ended
Acquisitions (Details) $ in Millions	May 31, 2013 USD ($)	Mar. 31, 2012 USD ($)	Feb. 28, 2011 payments	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Dec. 31, 2012 USD ($)
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Aggregate consideration				$ 232.0		$ 139.5
Wood Flowline Products, LLC [Member]
Business Acquisition [Line Items]
Number of contingent consideration payments (in payments) \| payments			2
Reclassification from liability to equity	$ 4.1	$ 3.3
Contingent consideration cash payment				3.5	$ 6.1
Phoinix Global LLC [Member]
Business Acquisition [Line Items]
Contingent consideration cash payment				$ 7.9	$ 12.1

Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Raw materials and parts	$ 131,510	$ 145,970
Work in process	78,880	86,558
Finished goods	235,615	243,726
Gross inventories	446,005	476,254
Inventory reserve	(20,920)	(21,125)
Inventories	$ 425,085	$ 455,129

- Definition

The amount of the valuation account as of the balance sheet date which reduces the carrying amount of inventory to net realizable value; takes into consideration such factors as market value, excessive quantities based on expected sales, technological obsolescence, and shrinkage. May also provide for estimated product returns or price concessions pertaining to product cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.BB)
-URI http://asc.fasb.org/extlink&oid=6386940&loc=d3e100047-122729

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 35
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Paragraph 14
-Chapter 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Paragraph 8, 9, 14
-Chapter 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Section A
-Paragraph 9
-Chapter 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 09
-Article 12

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 6
-Subparagraph a
-Article 5

+ Details

Goodwill and intangible assets (Schedule of Goodwill) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2013 USD ($)
Goodwill [Roll Forward]
Goodwill Balance at January 1, 2013 net	$ 695,799
Purchase accounting adjustment	97
Impact of non-U.S. local currency translation	(11,521)
Goodwill Balance at June 30, 2013 net	684,375
Drilling & Subsea [Member]
Goodwill [Roll Forward]
Goodwill Balance at January 1, 2013 net	616,520
Purchase accounting adjustment	97
Impact of non-U.S. local currency translation	(11,254)
Goodwill Balance at June 30, 2013 net	605,363
Production & Infrastructure [Member]
Goodwill [Roll Forward]
Goodwill Balance at January 1, 2013 net	79,279
Purchase accounting adjustment	0
Impact of non-U.S. local currency translation	(267)
Goodwill Balance at June 30, 2013 net	$ 79,012

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 72
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-Clause 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph l
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Goodwill and intangible assets (Finite-Lived and Indefinite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (85,515)	$ (77,244)
Intangible Assets Total, Gross carrying amount	330,034	334,663
Intangible Assets Total, Net amortizable intangibles	244,519	257,419
Trademark [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	5,230	5,230
Customer relationships [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount	237,536	241,358
Accumulated amortization	(55,406)	(49,766)
Net amortizable intangibles	182,130	191,592
Patents and technology [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount	19,703	19,780
Accumulated amortization	(5,179)	(4,360)
Net amortizable intangibles	14,524	15,420
Non-compete agreements [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount	5,793	5,880
Accumulated amortization	(4,729)	(4,420)
Net amortizable intangibles	1,064	1,460
Trade names [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount	39,612	40,255
Accumulated amortization	(9,549)	(8,680)
Net amortizable intangibles	30,063	31,575
Distributor relationships [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount	22,160	22,160
Accumulated amortization	(10,652)	(10,018)
Net amortizable intangibles	$ 11,508	$ 12,142
Minimum [Member] \| Customer relationships [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Amortization period (in years)	4 years	4 years
Minimum [Member] \| Patents and technology [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Amortization period (in years)	5 years	5 years
Minimum [Member] \| Non-compete agreements [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Amortization period (in years)	3 years	3 years
Minimum [Member] \| Trade names [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Amortization period (in years)	10 years	10 years
Minimum [Member] \| Distributor relationships [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Amortization period (in years)	8 years	8 years
Maximum [Member] \| Customer relationships [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Amortization period (in years)	15 years	15 years
Maximum [Member] \| Patents and technology [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Amortization period (in years)	17 years	17 years
Maximum [Member] \| Non-compete agreements [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Amortization period (in years)	6 years	6 years
Maximum [Member] \| Trade names [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Amortization period (in years)	15 years	15 years
Maximum [Member] \| Distributor relationships [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Amortization period (in years)	15 years	15 years

Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Jun. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Total debt	$ 530,545	$ 420,705
Less: current maturities	(26,338)	(20,504)
Long-term debt	504,207	400,201
Senior Secured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total debt	241,500	122,480
Term Loan [Member]
Debt Instrument [Line Items]
Total debt	288,750	296,250
Other Debt [Member]
Debt Instrument [Line Items]
Total debt	$ 295	$ 1,975

Debt (Narrative) (Details) - USD ($)	Jun. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Debt, outstanding balance	$ 530,545,000	$ 420,705,000
Credit Facility [Member]
Debt Instrument [Line Items]
Debt, outstanding balance	$ 241,500,000	$ 122,480,000
Weighted average interest rates	2.20%	2.21%
Line of credit facility, remaining borrowing capacity	$ 346,100,000
Term Loan [Member]
Debt Instrument [Line Items]
Debt, outstanding balance	288,750,000	$ 296,250,000
Revolving Credit Facility [Member] \| Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	600,000,000
Letter of Credit [Member] \| Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	75,000,000
Swingline Loan [Member] \| Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 25,000,000

Income taxes (Details)	6 Months Ended
Income taxes (Details)	Jun. 30, 2013	Jun. 30, 2012
Income Tax Disclosure [Abstract]
Effective income tax rate	31.50%	33.50%

Fair value measurements (Narrative) (Details) - USD ($)	Jun. 30, 2013	Dec. 31, 2012
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt instrument, fair value disclosure	$ 530,300,000
Interest Rate Swap [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Interest rate derivative liabilities, at fair value	$ 75,000,000
Not Designated as Hedging Instrument [Member] \| Interest Rate Swap [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fixed interest rate	1.83%
Significant unobservable inputs (Level 3) [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Interest rate derivatives	$ 115,000	$ 714,000

Business segments (Income Statement by Segment) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2013 USD ($) segments	Jun. 30, 2012 USD ($)
Segment Reporting [Abstract]
Number of operating segments (in segments) \| segments			2
Segment Reporting Information [Line Items]
Revenue	$ 367,887	$ 373,512	$ 740,886	$ 737,001
Operating income	47,138	69,838	96,351	140,051
Contingent consideration expense	0	(4,900)	0	(3,900)
Impairment of intangible assets	0	1,161	0	1,161
Transaction expenses	1,806	442	1,815	797
Loss on sale of assets	(115)	56	20	77
Total segments [Member]
Segment Reporting Information [Line Items]
Operating income	48,829	66,597	98,186	138,186
Drilling & Subsea [Member]
Segment Reporting Information [Line Items]
Revenue	209,198	222,651	431,137	435,715
Operating income	32,906	46,382	68,062	92,378
Production & Infrastructure [Member]
Segment Reporting Information [Line Items]
Revenue	158,905	151,080	310,115	301,675
Operating income	22,824	24,859	44,198	54,551
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	(216)	(219)	(366)	(389)
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income	$ (6,901)	$ (4,644)	$ (14,074)	$ (8,743)

Business segments (Assets by Segment) (Details) - USD ($) $ in Thousands	Jun. 30, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Assets	$ 2,037,220	$ 1,892,980
Drilling & Subsea [Member]
Segment Reporting Information [Line Items]
Assets	1,420,287	1,413,944
Production & Infrastructure [Member]
Segment Reporting Information [Line Items]
Assets	425,212	435,496
Corporate [Member]
Segment Reporting Information [Line Items]
Assets	$ 191,721	$ 43,540

Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Net Income attributable to common stockholders	$ 29,919	$ 44,121	$ 61,859	$ 86,603
Average shares outstanding (basic)	91,032	82,495	89,790	75,248
Common stock equivalents	3,574	7,299	4,711	6,742
Diluted shares	94,606	89,794	94,501	81,990
Basic earnings per share (in dollars per share)	$ 0.33	$ 0.53	$ 0.69	$ 1.15
Diluted earnings per share (in dollars per share)	$ 0.32	$ 0.49	$ 0.65	$ 1.06
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Diluted earnings per share calculation excludes (in shares)	300	1,200	200	800

Stockholders' equity (Warrants) (Details) - $ / shares	6 Months Ended
Stockholders' equity (Warrants) (Details) - $ / shares	Jun. 30, 2013	Aug. 31, 2010
Class of Warrant or Right [Line Items]
Number of warrants converted	6,366,072
Number of warrants outstanding	370,000
Warrants [Member]
Class of Warrant or Right [Line Items]
Number of shares issued for converted warrants	4,227,358
Fair value, exercise price (in dollars per share)		$ 1.94

Stockholders' equity (Share-based compensation) (Details)		6 Months Ended
	Feb. 21, 2013 shares	Jun. 30, 2013 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted (in shares)		342,880
Granted stock options, exercise price (in dollars per share) \| $ / shares		$ 26.05
Restricted Stock and Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity instruments other than options granted (in shares)		492,140
Restricted Stock and Restricted Stock Units with Specified Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity instruments other than options granted (in shares)		359,820
Award vesting period		4 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity instruments other than options granted (in shares)		110,720
Performance measurement period		3 years
Board of Directors [Member] \| Restricted Stock and Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity instruments other than options granted (in shares)	21,600
Minimum [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share conversion ratio		0
Maximum [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share conversion ratio		2

Related party transactions (Details) - Affiliated Entity [Member] - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Related Party Transaction [Line Items]
Purchases of inventory and services	$ 3.5	$ 2.4
Proceeds from sale of equipment and services	$ 0.6	$ 1.0