Oil States International (OIS) 10-Q 29 Jul 19 2019 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2019	Jul. 25, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2019
Document Transition Report	false
Entity File Number	001-16337
Entity Registrant Name	OIL STATES INTERNATIONAL, INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	76-0476605
Entity Address, Address Line One	Three Allen Center, 333 Clay Street
Entity Address, Address Line Two	Suite 4620
Entity Address, City or Town	Houston,
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77002
City Area Code	713
Local Phone Number	652-0582
Title of 12(b) Security	Common stock, par value $0.01 per share
Trading Symbol	OIS
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		60,507,750
Entity Central Index Key	0001121484
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Amendment Flag	false

Unaudited Consolidated Statemen

Unaudited Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues:
Revenues	$ 264,685	$ 285,845	$ 515,296	$ 539,421
Costs and expenses:
Cost of revenues (exclusive of depreciation and amortization expense presented below)	208,112	213,403	407,990	403,293
Selling, general and administrative expense	31,484	35,919	61,592	70,114
Depreciation and amortization expense	31,883	30,922	63,434	60,112
Other operating income, net	(399)	(3,099)	(485)	(1,884)
Operating expenses	271,080	277,145	532,531	531,635
Operating income (loss)	(6,395)	8,700	(17,235)	7,786
Interest expense, net	(4,617)	(4,790)	(9,369)	(9,244)
Other income	1,009	571	1,676	1,218
Income (loss) before income taxes	(10,003)	4,481	(24,928)	(240)
Income tax (provision) benefit	263	(1,739)	540	(510)
Net income (loss)	$ (9,740)	$ 2,742	$ (24,388)	$ (750)
Net income (loss) per share:
Basic (in dollars per share)	$ (0.16)	$ 0.05	$ (0.41)	$ (0.01)
Diluted (in dollars per share)	$ (0.16)	$ 0.05	$ (0.41)	$ (0.01)
Weighted average number of common shares outstanding:
Basic (in shares)	59,406	59,005	59,332	58,396
Diluted (in shares)	59,406	59,005	59,332	58,396
Products
Revenues:
Revenues	$ 124,965	$ 136,182	$ 241,293	$ 265,008
Costs and expenses:
Cost of revenues (exclusive of depreciation and amortization expense presented below)	95,289	95,324	184,557	188,300
Services
Revenues:
Revenues	139,720	149,663	274,003	274,413
Costs and expenses:
Cost of revenues (exclusive of depreciation and amortization expense presented below)	$ 112,823	$ 118,079	$ 223,433	$ 214,993

Unaudited Consolidated Statem_2

Unaudited Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (9,740)	$ 2,742	$ (24,388)	$ (750)
Other comprehensive income (loss):
Currency translation adjustments	(2,329)	(13,733)	137	(8,699)
Comprehensive loss	$ (12,069)	$ (10,991)	$ (24,251)	$ (9,449)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 12,406	$ 19,316
Accounts receivable, net	263,453	283,607
Inventories, net	210,006	209,393
Prepaid expenses and other current assets	25,514	21,715
Total current assets	511,379	534,031
Property, plant, and equipment, net	520,324	540,427
Operating lease assets, net	48,235
Goodwill, net	646,984	647,018
Other intangible assets, net	242,886	255,301
Other noncurrent assets	27,893	27,044
Total assets	1,997,701	2,003,821
Current liabilities:
Current portion of long-term debt	25,583	25,561
Accounts payable	83,909	77,511
Accrued liabilities	53,478	60,730
Current operating lease liabilities	8,997
Income taxes payable	4,243	3,072
Deferred revenue	15,360	14,160
Total current liabilities	191,570	181,034
Long-term debt	272,784	306,177
Long-term operating lease liabilities	39,268
Deferred income taxes	50,224	53,831
Other noncurrent liabilities	24,127	23,011
Total liabilities	577,973	564,053
Stockholders' equity:
Common stock, $.01 par value, 200,000,000 shares authorized, 72,521,801 shares and 71,753,937 shares issued, respectively	726	718
Additional paid-in capital	1,106,340	1,097,758
Retained earnings	1,005,130	1,029,518
Accumulated other comprehensive loss	(71,260)	(71,397)
Treasury stock, at cost, 12,039,547 and 11,784,242 shares, respectively	(621,208)	(616,829)
Total stockholders' equity	1,419,728	1,439,768
Total liabilities and stockholders' equity	$ 1,997,701	$ 2,003,821

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Jun. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	72,521,801	71,753,937
Treasury stock, shares (in shares)	12,039,547	11,784,242

Unaudited Consolidated Statem_3

Unaudited Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning Balance at Dec. 31, 2017	$ 1,132,713	$ 627	$ 754,607	$ 1,048,623	$ (58,493)	$ (612,651)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(750)			(750)
Currency translation adjustments (excluding intercompany advances)	(6,138)				(6,138)
Currency translation adjustments on intercompany advances	(2,561)				(2,561)
Stock-based compensation expense:
Restricted stock	10,561	4	10,557
Stock options	300		300
Issuance of common stock in connection with GEODynamics acquisition	294,910	87	294,823
Issuance of 1.50% convertible senior notes, net of income taxes of $7,744	25,640		25,640
Surrender of stock to settle taxes on restricted stock awards	(4,022)					(4,022)
Ending Balance at Jun. 30, 2018	1,450,653	718	1,085,927	1,047,873	(67,192)	(616,673)
Beginning Balance at Mar. 31, 2018	1,456,015	717	1,080,216	1,045,131	(53,459)	(616,590)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	2,742			2,742
Currency translation adjustments (excluding intercompany advances)	(11,242)				(11,242)
Currency translation adjustments on intercompany advances	(2,491)				(2,491)
Stock-based compensation expense:
Restricted stock	5,618	1	5,617
Stock options	94		94
Issuance of common stock in connection with GEODynamics acquisition	0	0	0
Issuance of 1.50% convertible senior notes, net of income taxes of $7,744	0		0
Surrender of stock to settle taxes on restricted stock awards	(83)					(83)
Ending Balance at Jun. 30, 2018	1,450,653	718	1,085,927	1,047,873	(67,192)	(616,673)
Beginning Balance at Dec. 31, 2018	1,439,768	718	1,097,758	1,029,518	(71,397)	(616,829)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(24,388)			(24,388)
Currency translation adjustments (excluding intercompany advances)	(393)				(393)
Currency translation adjustments on intercompany advances	530				530
Stock-based compensation expense:
Restricted stock	8,537	8	8,529
Stock options	53		53
Stock repurchases	(757)					(757)
Surrender of stock to settle taxes on restricted stock awards	(3,622)					(3,622)
Ending Balance at Jun. 30, 2019	1,419,728	726	1,106,340	1,005,130	(71,260)	(621,208)
Beginning Balance at Mar. 31, 2019	1,427,644	725	1,102,176	1,014,870	(68,931)	(621,196)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(9,740)			(9,740)
Currency translation adjustments (excluding intercompany advances)	(2,946)				(2,946)
Currency translation adjustments on intercompany advances	617				617
Stock-based compensation expense:
Restricted stock	4,165	1	4,164
Stock options	0		0
Stock repurchases	0					0
Surrender of stock to settle taxes on restricted stock awards	(12)					(12)
Ending Balance at Jun. 30, 2019	$ 1,419,728	$ 726	$ 1,106,340	$ 1,005,130	$ (71,260)	$ (621,208)

Unaudited Consolidated Statem_4

Unaudited Consolidated Statements of Stockholders' Equity (Parenthetical) - 1.5% Convertible Unsecured Senior Notes $ in Thousands	Jun. 30, 2018USD ($)
Stated interest rate	1.50%
Debt instrument, convertible, income taxes	$ 7,744

Unaudited Consolidated Statem_5

Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net income (loss)	$ (24,388)	$ (750)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization expense	63,434	60,112
Stock-based compensation expense	8,590	10,861
Amortization of debt discount and deferred financing costs	3,894	3,613
Deferred income tax provision (benefit)	(3,495)	481
Gain on disposals of assets	(1,245)	(927)
Other, net	141	2,520
Changes in operating assets and liabilities, net of effect from acquired businesses:
Accounts receivable	19,884	(19,134)
Inventories	(534)	(1,768)
Accounts payable and accrued liabilities	1,200	(2,251)
Income taxes payable	943	(31)
Other operating assets and liabilities, net	(2,421)	(5,792)
Net cash flows provided by operating activities	66,003	46,934
Cash flows from investing activities:
Capital expenditures	(31,577)	(38,261)
Acquisitions of businesses, net of cash acquired	0	(379,676)
Proceeds from disposition of property, plant and equipment	2,151	1,197
Other, net	(1,459)	(985)
Net cash flows used in investing activities	(30,885)	(417,725)
Cash flows from financing activities:
Issuance of 1.50% convertible senior notes	0	200,000
Revolving credit facility borrowings	119,252	704,469
Revolving credit facility repayments	(156,208)	(546,564)
Other debt and finance lease repayments, net	(301)	(266)
Payment of financing costs	(8)	(7,366)
Purchase of treasury stock	(757)	0
Shares added to treasury stock as a result of net share settlements due to vesting of restricted stock	(3,622)	(4,022)
Net cash flows provided by (used in) financing activities	(41,644)	346,251
Effect of exchange rate changes on cash and cash equivalents	(384)	183
Net change in cash and cash equivalents	(6,910)	(24,357)
Cash and cash equivalents, beginning of period	19,316	53,459
Cash and cash equivalents, end of period	12,406	29,102
Cash paid for:
Interest	5,285	4,033
Income taxes, net of refunds	$ 2,002	$ 2,978

Unaudited Consolidated Statem_6

Unaudited Consolidated Statements of Cash Flows (Parenthetical)	Jun. 30, 2019	Jun. 30, 2018
1.5% Convertible Unsecured Senior Notes
Stated interest rate	1.50%	1.50%

Organization and Basis of Prese

Organization and Basis of Presentation	6 Months Ended
	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Basis of Presentation	Organization and Basis of Presentation The accompanying unaudited condensed consolidated financial statements of Oil States International, Inc. and its subsidiaries (referred to in this report as "we" or the "Company") have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the "Commission") pertaining to interim financial information. Certain information in footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles ("GAAP") have been condensed or omitted pursuant to these rules and regulations. The unaudited financial statements included in this report reflect all the adjustments, consisting of normal recurring adjustments, which the Company considers necessary for a fair statement of the results of operations for the interim periods covered and for the financial condition of the Company at the date of the interim balance sheet. Results for the interim periods are not necessarily indicative of results for the full year. Certain prior-year amounts in the Company's unaudited condensed consolidated financial statements have been reclassified to conform to the current year presentation. The preparation of condensed consolidated financial statements in conformity with GAAP requires the use of estimates and assumptions by management in determining the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Examples of such estimates include goodwill and long-lived asset impairment analyses, revenue and income recognized over time, valuation allowances recorded on deferred tax assets, the fair value of assets and liabilities acquired and identification of associated goodwill and intangible assets, reserves on inventory, allowances for doubtful accounts, warranty obligations and potential future adjustments related to contractual indemnification and other agreements. If the underlying estimates and assumptions, upon which the financial statements are based, change in future periods, actual amounts may differ from those included in the accompanying condensed consolidated financial statements. The financial statements included in this report should be read in conjunction with the Company's audited financial statements and accompanying notes included in its Annual Report on Form 10-K for the year ended December 31, 2018 (the " 2018 Form 10‑K").

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2019
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (the "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 February 2016, the FASB issued guidance on leases which, as amended, introduced the recognition of lease assets and lease liabilities by lessees for all leases that are not short-term in nature. The Company adopted this guidance on January 1, 2019, using the optional transition method of recognizing any cumulative effect of adopting this guidance as an adjustment to the opening balance of retained earnings. The cumulative impact of the adoption of the new standard was not material to the Company's consolidated financial statements. Prior periods were not retrospectively adjusted. In addition, the Company elected a package of practical expedients permitted under transition guidance for the new standard which, among other things, allowed for the carryforward of historical lease classification. The Company has lease agreements with lease and non-lease components, which are generally accounted for as a single lease component. Most of the Company's leases do not provide an implicit interest rate. Therefore, the Company's incremental borrowing rate, based on available information at the lease commencement date, is used to determine the present value of lease payments. In connection with the adoption of the new standard, the Company recorded $47.7 million of operating lease assets and liabilities as of January 1, 2019. The standard did not materially impact our consolidated statement of operations and had no impact on cash flows.

Business Acquisitions, Goodwill

Business Acquisitions, Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Business Acquisitions, Goodwill and Other Intangible Assets	Business Acquisitions, Goodwill and Other Intangible Assets GEODynamics Acquisition On January 12, 2018, the Company acquired GEODynamics, Inc. ("GEODynamics"), which provides oil and gas perforation systems and downhole tools in support of completion, intervention, wireline and well abandonment operations (the "GEODynamics Acquisition"). Total recorded purchase price consideration was $615.3 million , consisting of (i) $295.4 million in cash (net of cash acquired), which was funded through borrowings under the Company's Revolving Credit Facility (as defined in Note 6 , "Long-term Debt"), (ii) approximately 8.66 million shares of the Company's common stock (having a market value of approximately $295 million based on the closing share price of $34.05 as of the closing date of the acquisition) and (iii) an unsecured $25 million promissory note that bears interest at 2.5% per annum. Under the terms of the purchase agreement, the Company is entitled to indemnification in respect of certain matters occurring prior to the acquisition and payments due under the promissory note are subject to set-off, in part or in full, regarding such indemnified matters. See Note 14 , "Commitments and Contingencies." GEODynamics' results of operations have been included in the Company's financial statements subsequent to the closing of the acquisition on January 12, 2018. The acquired GEODynamics operations are reported as the Downhole Technologies segment. See Note 13 , "Segments and Related Information" for further information with respect to the Downhole Technologies segment operations. Falcon Acquisition On February 28, 2018, the Company acquired Falcon Flowback Services, LLC ("Falcon"), a full service provider of flowback and well testing services for the separation and recovery of fluids, solid debris and proppant used during hydraulic fracturing operations. Falcon provides additional scale and diversity to our Completion Services well testing operations in key shale plays in the United States. The purchase price was $84.2 million (net of cash acquired). The Falcon acquisition was funded by borrowings under the Company's Revolving Credit Facility. Under the terms of the purchase agreement, the Company may be entitled to indemnification in respect of certain matters occurring prior to acquisition. Falcon's results of operations have been included in the Company's financial statements and has been reported within the Completion Services business subsequent to the closing of the acquisition on February 28, 2018. Transaction-Related Costs During the first quarter of 2018, the Company expensed transaction-related costs of $2.6 million , which are included in selling, general and administrative expense and in other operating income for the six months ended June 30, 2018 . Supplemental Unaudited Pro Forma Financial Information The following supplemental unaudited pro forma results of operations data for the six months ended June 30, 2018 gives pro forma effect to the consummation of the GEODynamics and Falcon acquisitions as if they had occurred on January 1, 2018. The supplemental unaudited pro forma financial information was prepared based on historical financial information, adjusted to give pro forma effect to fair value adjustments on depreciation and amortization expense, interest expense, and related tax effects, among others. The pro forma results for the six months ended June 30, 2018 also reflect adjustments to exclude the after-tax impact of transaction costs totaling $2.0 million . The supplemental unaudited pro forma financial information may not reflect what the results of the combined operations would have been had the acquisitions occurred on January 1, 2018. As such, it is presented for informational purposes only (in thousands, except per share amount). Six Months Ended Revenue $ 566,045 Net income $ 1,750 Diluted net income per share $ 0.03 Diluted weighted average common shares outstanding 58,922 Goodwill Changes in the carrying amount of goodwill for the six -month period ended June 30, 2019 were as follows (in thousands): Well Site Services Downhole Technologies Offshore/ Total Completion Services Drilling Services Subtotal Balance as of December 31, 2018 Goodwill $ 221,582 $ 22,767 $ 244,349 $ 357,502 $ 162,462 $ 764,313 Accumulated impairment losses (94,528 ) (22,767 ) (117,295 ) — — (117,295 ) 127,054 — 127,054 357,502 162,462 647,018 Foreign currency translation — — — — (34 ) (34 ) Balance as of June 30, 2019 $ 127,054 $ — $ 127,054 $ 357,502 $ 162,428 $ 646,984 Other Intangible Assets The following table presents the gross carrying amount, accumulated amortization and net carrying amount for major intangible asset classes as of June 30, 2019 and December 31, 2018 (in thousands): June 30, 2019 December 31, 2018 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer relationships $ 168,266 $ 38,729 $ 129,537 $ 167,811 $ 33,247 $ 134,564 Patents/Technology/Know-how 85,423 27,268 58,155 84,903 23,418 61,485 Noncompete agreements 17,100 8,418 8,682 18,705 7,544 11,161 Tradenames and other 53,708 7,196 46,512 53,708 5,617 48,091 $ 324,497 $ 81,611 $ 242,886 $ 325,127 $ 69,826 $ 255,301 For the three months ended June 30, 2019 and 2018 , amortization expense was $6.8 million and $6.4 million , respectively. Amortization expense was $13.5 million and $12.0 million for the six months ended June 30, 2019 and 2018 , respectively. The Company's industry is highly cyclical, and this cyclicality impacts the determination of whether a decline in value of the Company's long-lived assets, including definite-lived intangibles, and/or goodwill has occurred. The Company is required to periodically review the long-lived assets and goodwill of its reporting units for potential impairment in value if circumstances, some of which are beyond the Company's control, indicate that the carrying amounts will not be recoverable. The Company performed a qualitative assessment at June 30, 2019 and concluded that no further impairment evaluation was required. As a result, no impairments were recorded in the second quarter of 2019. Should, among other events and circumstances, global economic and industry conditions deteriorate, the outlook for future operating results and cash flow for any of the Company's reporting units decline, income tax rates increase or regulations change, costs of equity or debt capital increase, valuations for comparable public companies or comparable acquisition valuations decrease, or the Company's market capitalization experiences a material, sustained decline below its book value, the Company may need to recognize impairment losses in future periods.

Details of Selected Balance She

Details of Selected Balance Sheet Accounts	6 Months Ended
	Jun. 30, 2019
Details of Selected Balance Sheet Accounts [Abstract]
Details of Selected Balance Sheet Accounts	Details of Selected Balance Sheet Accounts Additional information regarding selected balance sheet accounts at June 30, 2019 and December 31, 2018 is presented below (in thousands): June 30, December 31, Accounts receivable, net: Trade $ 208,175 $ 227,052 Unbilled revenue 37,518 35,674 Contract assets 20,113 21,201 Other 3,950 6,381 Total accounts receivable 269,756 290,308 Allowance for doubtful accounts (6,303 ) (6,701 ) $ 263,453 $ 283,607 June 30, December 31, Deferred revenue (contract liabilities) $ 15,360 $ 14,160 For the six months ended June 30, 2019 , the $1.1 million net decrease in contract assets was primarily attributable to $13.1 million transferred to accounts receivable, which was partially offset by $12.1 million in revenue recognized during the period. Deferred revenue increased by $1.2 million in 2019 , primarily reflecting $5.9 million in new customer billings which were not recognized as revenue during the period, partially offset by the recognition of $5.0 million of revenue that was deferred at the beginning of the period. June 30, December 31, Inventories, net: Finished goods and purchased products $ 105,285 $ 96,195 Work in process 21,838 20,552 Raw materials 103,139 111,197 Total inventories 230,262 227,944 Allowance for excess or obsolete inventory (20,256 ) (18,551 ) $ 210,006 $ 209,393 Estimated Useful Life (years) June 30, December 31, Property, plant and equipment, net: Land $ 37,758 $ 37,545 Buildings and leasehold improvements 2 – 40 259,981 259,834 Machinery and equipment 1 – 28 493,121 483,629 Completion Services equipment 2 – 10 505,427 492,183 Office furniture and equipment 3 – 10 45,013 43,654 Vehicles 2 – 10 114,729 122,982 Construction in progress 23,337 29,451 Total property, plant and equipment 1,479,366 1,469,278 Accumulated depreciation (959,042 ) (928,851 ) $ 520,324 $ 540,427 June 30, December 31, Other noncurrent assets: Deferred compensation plan $ 21,593 $ 20,468 Deferred income taxes 633 761 Other 5,667 5,815 $ 27,893 $ 27,044 June 30, December 31, Accrued liabilities: Accrued compensation $ 20,722 $ 29,867 Insurance liabilities 12,080 9,177 Accrued taxes, other than income taxes 7,990 4,530 Accrued commissions 1,470 1,484 Accrued claims 258 2,983 Other 10,958 12,689 $ 53,478 $ 60,730

Net Income (Loss) Per Share

Net Income (Loss) Per Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	Net Income (Loss) Per Share The table below provides a reconciliation of the numerators and denominators of basic and diluted net income (loss) per share for the three and six months ended June 30, 2019 and 2018 (in thousands, except per share amounts): Three Months Ended Six Months Ended 2019 2018 2019 2018 Numerators: Net income (loss) $ (9,740 ) $ 2,742 $ (24,388 ) $ (750 ) Less: Income attributable to unvested restricted stock awards — (44 ) — — Numerator for basic net inco m e (loss) per share (9,740 ) 2,698 (24,388 ) (750 ) Effect of dilutive securities: Unvested restricted stock awards — — — — Numerator for diluted net inco m e (loss) per share $ (9,740 ) $ 2,698 $ (24,388 ) $ (750 ) Denominators: Weighted average number of common shares outstanding 60,458 59,964 60,353 59,389 Less: Weighted average number of unvested restricted stock awards outstanding (1,052 ) (959 ) (1,021 ) (993 ) Denominator for basic net inco m e ( l oss) per share 59,406 59,005 59,332 58,396 Effect of dilutive securities: Unvested restricted stock awards — — — — Assumed exercise of stock options — — — — 1.50% convertible senior notes — — — — — — — — Denominator for diluted net inco m e (loss) per share 59,406 59,005 59,332 58,396 Net income (loss) per share: Basic $ (0.16 ) $ 0.05 $ (0.41 ) $ (0.01 ) Diluted (0.16 ) 0.05 (0.41 ) (0.01 ) The calculation of diluted net loss per share for the three and six months ended June 30, 2019 excluded 664 thousand shares and 676 thousand shares, respectively, issuable pursuant to outstanding stock options, due to their antidilutive effect. The calculation of diluted net income (loss) per share for the three and six months ended June 30, 2018 excluded 695 thousand shares and 697 thousand shares, respectively, issuable pursuant to outstanding stock options, due to their antidilutive effect. Additionally, shares issuable upon conversion of the 1.50% convertible senior notes were not convertible and therefore excluded for the three and six months ended June 30, 2019 and 2018 , due to their antidilutive effect.

Long-term Debt

Long-term Debt	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Long-term Debt	Long-term Debt As of June 30, 2019 and December 31, 2018 , long-term debt consisted of the following (in thousands): June 30, December 31, Revolving credit facility (1) $ 97,465 $ 134,096 1.50% convertible senior notes (2) 170,663 167,102 Promissory note 25,000 25,000 Other debt and finance lease obligations 5,239 5,540 Total debt 298,367 331,738 Less: Current portion (25,583 ) (25,561 ) Total long-term debt $ 272,784 $ 306,177 ____________________ (1) Presented net of $1.7 million and $2.0 million of unamortized debt issuance costs as of June 30, 2019 and December 31, 2018 , respectively. (2) The principal amount of the 1.50% convertible senior notes is $200.0 million . See " 1.50% Convertible Senior Notes" below. Revolving Credit Facility The Company's senior secured revolving credit facility, as amended (the "Revolving Credit Facility") is governed by a credit agreement with Wells Fargo Bank, N.A., as administrative agent for the lenders party thereto and collateral agent for the secured parties thereunder, and the lenders and other financial institutions from time to time party thereto, dated as of January 30, 2018, as amended and restated (the "Credit Agreement"), and matures on January 30, 2022. The Credit Agreement governs our Revolving Credit Facility. The Revolving Credit Facility provides for $350 million in lender commitments with an option to increase the maximum borrowings to $500 million subject to additional lender commitments prior to its maturity on January 30, 2022. Under the Revolving Credit Facility, $50 million is available for the issuance of letters of credit. As of June 30, 2019 , the Company had $99.2 million of borrowings outstanding under the Credit Agreement and $16.1 million of outstanding letters of credit, leaving $96.0 million available to be drawn. The total amount available to be drawn under our Revolving Credit Facility was less than the lender commitments as of June 30, 2019 , due to limits imposed by maintenance covenants in the Credit Agreement. Amounts outstanding under the Revolving Credit Facility bear interest at LIBOR plus a margin of 1.75% to 3.00% , or at a base rate plus a margin of 0.75% to 2.00% , in each case based on a ratio of the Company's total net funded debt to consolidated EBITDA (as defined in the Credit Agreement). The Company must also pay a quarterly commitment fee of 0.25% to 0.50% , based on the Company's ratio of total net funded debt to consolidated EBITDA, on the unused commitments under the Credit Agreement. The Credit Agreement contains customary financial covenants and restrictions. Specifically, the Company must maintain an interest coverage ratio, defined as the ratio of consolidated EBITDA to consolidated interest expense, of at least 3.00 to 1.0, a maximum senior secured leverage ratio, defined as the ratio of senior secured debt to consolidated EBITDA, of no greater than 2.25 to 1.0 and a total net leverage ratio, defined as the ratio of total net funded debt to consolidated EBITDA, of no greater than 3.75 to 1.0. The financial covenants give pro forma effect acquired businesses and the annualization of EBITDA for acquired businesses. Each of the factors considered in the calculation of these ratios are defined in the Credit Agreement. Consolidated EBITDA and consolidated interest, as defined, exclude goodwill impairments, losses on extinguishment of debt, debt discount amortization, stock-based compensation expense and other non-cash charges. Borrowings under the Credit Agreement are secured by a pledge of substantially all of the Company's assets and the assets of its domestic subsidiaries. The Company's obligations under the Credit Agreement are guaranteed by its significant domestic subsidiaries. The Credit Agreement also contains negative covenants that limit the Company's ability to borrow additional funds, encumber assets, pay dividends, sell assets and enter into other significant transactions. Under the Credit Agreement, the occurrence of specified change of control events involving the Company would constitute an event of default that would permit the banks to, among other things, accelerate the maturity of the facility and cause it to become immediately due and payable in full. As of June 30, 2019 , the Company was in compliance with its debt covenants. 1.50% Convertible Senior Notes On January 30, 2018, the Company issued $200 million aggregate principal amount of its 1.50% convertible senior notes due 2023 (the "Notes") pursuant to an indenture, dated as of January 30, 2018 (the "Indenture"), between the Company and Wells Fargo Bank, National Association, as trustee. Net proceeds from the Notes, after deducting issuance costs, were approximately $194 million , which was used by the Company to repay a portion of the outstanding borrowings under the Revolving Credit Facility during the first quarter of 2018. The initial carrying amount of the Notes recorded in the consolidated balance sheet was less than the $200 million in principal amount of the Notes, in accordance with applicable accounting principles, reflective of the estimated fair value of a similar debt instrument that does not have a conversion feature. The Company recorded the value of the conversion feature as a debt discount, which is amortized as interest expense over the term of the Notes, with a similar amount allocated to additional paid-in capital. As a result of this amortization, the interest expense the Company recognizes related to the Notes for accounting purposes is based on an effective interest rate of approximately 6.0% , which is greater than the cash interest payments the Company is obligated to pay on the Notes. Interest expense associated with the Notes for the three and six months ended June 30, 2019 was $2.5 million and $5.1 million , respectively, while the related contractual interest expense totaled $0.8 million and $1.5 million , respectively. Interest expense associated with the Notes for the three and six months ended June 30, 2018 was $2.4 million and $4.1 million , respectively, while the related contractual interest expense totaled $0.8 million and $1.3 million , respectively. The following table presents the carrying amount of the Notes in the consolidated balance sheets (in thousands): June 30, December 31, Principal amount of the liability component $ 200,000 $ 200,000 Less: Unamortized discount 25,669 28,825 Less: Unamortized issuance costs 3,668 4,073 Net carrying amount of the liability $ 170,663 $ 167,102 The Notes bear interest at a rate of 1.50% per year until maturity. Interest is payable semi-annually in arrears on February 15 and August 15 of each year, beginning on August 15, 2018. In addition, additional interest and special interest may accrue on the Notes under certain circumstances as described in the Indenture. The Notes will mature on February 15, 2023, unless earlier repurchased, redeemed or converted. The initial conversion rate is 22.2748 shares of the Company's common stock per $1,000 principal amount of Notes (equivalent to an initial conversion price of approximately $44.89 per share of common stock). The conversion rate, and thus the conversion price, may be adjusted under certain circumstances as described in the Indenture. The Company's intent is to repay the principal amount of the Notes in cash and the conversion feature in shares of the Company's common stock. Noteholders may convert their Notes, at their option only in the following circumstances: (1) if the last reported sale price per share of the Company's common stock exceeds 130% of the conversion price for each of at least 20 trading days during the 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter; (2) during the five consecutive business days immediately after any five consecutive trading day period (such five consecutive trading day period, the "measurement period") in which the trading price per $1,000 principal amount of the Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price per share of the Company's common stock on such trading day and the conversion rate on such trading day; (3) upon the occurrence of certain corporate events or distributions on the Company's common stock, as described in the Indenture; or (4) if the Company calls the Notes for redemption, or at any time from, and including, November 15, 2022 until the close of business on the second scheduled trading day immediately before the maturity date. The Company will settle conversions by paying or delivering, as applicable, cash, shares of common stock or a combination of cash and shares of common stock, at the Company's election, based on the applicable conversion rate(s). If the Company elects to deliver cash or a combination of cash and shares of common stock, then the consideration due upon conversion will be based on a defined observation period. The Notes will be redeemable, in whole or in part, at the Company's option at any time, and from time to time, on or after February 15, 2021, at a cash redemption price equal to the principal amount of the Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date, but only if the last reported sale price per share of common stock exceeds 130% of the conversion price on each of at least 20 trading days during the 30 consecutive trading days ending on, and including, the trading day immediately before the date the Company sends the related redemption notice. If specified change in control events involving the Company as defined in the Indenture occur, then noteholders may require the Company to repurchase their Notes at a cash repurchase price equal to the principal amount of the Notes to be repurchased, plus accrued and unpaid interest. Additionally, the Notes contain certain events of default as set forth in the Indenture. As of June 30, 2019 , none of the conditions allowing holders of the Notes to convert, or requiring us to repurchase the Notes, had been met. Promissory Note In connection with the GEODynamics Acquisition, the Company issued a $25.0 million promissory note that bears interest at 2.50% per annum and was scheduled to mature on July 12, 2019. Payments due under the promissory note are subject to set off, in part or in full, against certain indemnifications claims related to matters occurring prior to the Company's acquisition of GEODynamics. As more fully described in Note 14 , "Commitments and Contingencies," the Company has provided notice to and asserted an indemnification claim against the seller of GEODynamics. As a result, the maturity date of the note is extended until the resolution of the indemnity claim. The Company expects that the amount ultimately paid in respect of such note may be reduced as a result of this indemnification claim.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company's financial instruments consist of cash and cash equivalents, investments, receivables, payables and debt instruments. The Company believes that the carrying values of these instruments, other than the Notes, on the accompanying consolidated balance sheets approximate their fair values. The estimated fair value of the Notes as of June 30, 2019 and December 31, 2018 was approximately $178 million and $166 million , respectively, based on quoted market prices (a Level 1 fair value measurement), which compares to the $200 million in principal amount of the Notes.

Leases

Leases	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Leases	Leases The Company leases a portion of its facilities, office space, equipment and vehicles. Leases with an initial term of 12 months or less are not recorded in the consolidated balance sheet as of June 30, 2019 . Substantially all of the Company's future lease obligations are related to operating leases. Consistent with the Company's historical practice, finance (capital) lease obligations, which totaled $0.7 million as of June 30, 2019 , are classified within long-term debt while related assets are included within property, plant and equipment. Most of the Company's operating leases include one or more options to renew, with renewal terms that can extend the lease term from one to 20 years . The exercise of lease renewal options is at the Company's sole discretion. The depreciable life of lease-related assets and leasehold improvements are limited by the expected lease term. Certain operating lease agreements include rental payments adjusted periodically for inflation. The Company's operating lease agreements do not contain any material residual value guarantees or material restrictive covenants. While the Company rents or subleases certain real estate to third parties, such amounts are not material. Cash outflows related to operating leases are presented within cash flows from operations. The following tables summarize the financial statement information regarding of the Company's operating leases for the three and six months ended June 30, 2019 (in thousands): Three Months Ended Six Months Ended Operating lease expense components: Leases with initial term of greater than 12 months $ 2,897 $ 5,858 Leases with initial term of 12 months or less 1,413 2,766 $ 4,310 $ 8,624 Operating lease assets obtained in exchange for operating lease liabilities: Upon adoption of standard (January 1, 2019) $ 47,721 Subsequent to adoption 5,332 Non-cash operating lease amounts $ 53,053 The following table provides the maturities of operating lease liabilities as of June 30, 2019 (in thousands): Operating Leases 2019 (less six months ended June 30) $ 5,654 2020 10,125 2021 8,282 2022 6,176 2023 5,192 After 2023 22,861 Total lease payments 58,290 Less: Imputed interest (10,025 ) Present value of operating lease liabilities 48,265 Less: Current portion (8,997 ) Total long-term operating lease liabilities $ 39,268 Weighted-average remaining lease term (years) 7.7 Weighted-average discount rate 5.0 %

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Stockholders' Equity	Stockholders' Equity The following table provides details with respect to the changes to the number of shares of common stock, $0.01 par value, outstanding during the first six months of 2019 : Shares of common stock outstanding – December 31, 2018 59,969,695 Restricted stock awards, net of forfeitures 767,864 Shares withheld for taxes on vesting of restricted stock awards and transferred to treasury (204,505 ) Purchase of treasury stock (50,800 ) Shares of common stock outstanding – June 30, 2019 60,482,254 As of June 30, 2019 and December 31, 2018 , the Company had 25,000,000 shares of preferred stock, $0.01 par value, authorized, with no shares issued or outstanding. On July 29, 2015 , the Company's Board of Directors approved a share repurchase program providing for the repurchase of up to $150.0 million of the Company's common stock, which, following extensions, was scheduled to expire on July 29, 2019. On July 24, 2019 , our Board of Directors extended the share repurchase program for one year to July 29, 2020. During the first six months of 2019 , the Company repurchased approximately 51 thousand shares of common stock under the program. The amount remaining under the Company's share repurchase authorization as of June 30, 2019 was $119.8 million . Subject to applicable securities laws, such purchases will be at such times and in such amounts as the Company deems appropriate.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Accumulated other comprehensive loss, reported as a component of stockholders' equity, decreased slightly during the first half of 2019 from $71.4 million at December 31, 2018 to $71.3 million at June 30, 2019 , due to changes in currency exchange rates. Accumulated other comprehensive loss is primarily related to fluctuations in the currency exchange rates compared to the U.S. dollar which are used to translate certain of the international operations of our reportable segments. For the six months ended June 30, 2018 , currency translation adjustments recognized as a component of other comprehensive loss were primarily attributable to the United Kingdom and Brazil, due to the exchange rates for the British pound and the Brazilian real weakening by 2% and 14% , respectively, compared to the U.S. dollar, and contributing to other comprehensive loss of $8.7 million .

Long-Term Incentive Compensatio

Long-Term Incentive Compensation	6 Months Ended
	Jun. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Long-Term Incentive Compensation	Long-Term Incentive Compensation The following table presents a summary of activity for stock options, service-based restricted stock awards and performance-based stock unit awards for the six months ended June 30, 2019 . Stock Options Service-based Restricted Stock Performance-based Stock Units Outstanding – December 31, 2018 681,894 929,554 227,124 Granted — 674,923 76,793 Vested/Exercised — (534,661 ) (105,988 ) Forfeited (45,624 ) (13,047 ) — Outstanding – June 30, 2019 636,270 1,056,769 197,929 Weighted average grant date fair value (2019 awards) $ — $ 17.65 $ 17.58 The restricted stock program consists of a combination of service-based restricted stock and performance-based stock units. Service-based restricted stock awards generally vest on a straight-line basis over their term, which is generally three years . Performance-based restricted stock awards generally vest at the end of a three -year period, with the number of shares ultimately issued under the program dependent upon achievement of predefined specific performance measures. In the event the predefined targets are exceeded for any performance-based award, additional shares up to a maximum of 200% of the target award may be granted. Conversely, if actual performance falls below the predefined target, the number of shares vested is reduced. If the actual performance falls below the threshold performance level, no restricted shares will vest. The performance measure for awards issued in 2017 is relative total stockholder return compared to a peer group of companies. The performance measures for performance-based stock units granted during 2018 and 2019 are based on the Company's EBITDA growth rate over a three -year period. During the first quarters of 2019 and 2018, the Company issued conditional long-term cash incentive awards ("Cash Awards") of approximately $1.3 million each, with the ultimate dollar amount to be awarded ranging from zero to a maximum of $2.7 million each. The performance measure for these Cash Awards is relative total stockholder return compared to a peer group of companies measured over a three -year period. The obligation related to the Cash Awards is classified as a liability and recognized over the vesting period. Stock-based compensation pre-tax expense recognized in the three and six months ended June 30, 2019 totaled $4.2 million and $8.6 million , respectively. Stock-based compensation pre-tax expense recognized in the three and six months ended June 30, 2018 totaled $6.0 million and $11.2 million , respectively. As of June 30, 2019 , there was $22.4 million of pre-tax compensation costs related to service-based and performance-based stock awards, which will be recognized in future periods as vesting conditions are satisfied.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The income tax benefit for the three and six month periods ended June 30, 2019 was calculated using a discrete approach. This methodology was used because minor changes in the Company's results of operations and non-deductible expenses can materially impact the estimated annual effective tax rate. For the three months ended June 30, 2019 , the Company's income tax benefit was $0.3 million , or 2.6% of pre-tax losses . For the six months ended June 30, 2019 , the Company's income tax benefit was $0.5 million , or 2.2% of pre-tax losses . This compares to an income tax provision of $1.7 million , or 38.8% of pre-tax income , and an income tax provision of $0.5 million , or 212.5% of pre-tax losses , for the three and six months ended June 30, 2018 , respectively. The relatively low effective tax rate benefit for the three and six months ended June 30, 2019 was primarily attributable to certain non-deductible expenses.

Segments and Related Informatio

Segments and Related Information	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Segments and Related Information	Segments and Related Information The Company operates through three reportable segments: Well Site Services, Downhole Technologies and Offshore/Manufactured Products. The Company's reportable segments represent strategic business units that generally offer different products and services. They are managed separately because each business often requires different technologies and marketing strategies. Recent acquisitions, except for the acquisition of GEODynamics in 2018, have been direct extensions to our business segments. Financial information by business segment for the three and six months ended June 30, 2019 and 2018 is summarized in the following tables (in thousands). Revenues Depreciation and Operating income (loss) Capital Total assets Three months ended June 30, 2019 Well Site Services – Completion Services $ 103,320 $ 17,248 $ (507 ) $ 7,201 $ 507,028 Drilling Services 12,646 3,224 (2,601 ) 965 59,322 Total Well Site Services 115,966 20,472 (3,108 ) 8,166 566,350 Downhole Technologies 46,740 5,256 (1,462 ) 3,460 707,878 Offshore/Manufactured Products 101,979 5,973 9,809 1,720 677,644 Corporate — 182 (11,634 ) 309 45,829 Total $ 264,685 $ 31,883 $ (6,395 ) $ 13,655 $ 1,997,701 Revenues Depreciation and Operating income (loss) Capital Total assets Three months ended June 30, 2018 Well Site Services – Completion Services $ 108,368 $ 16,816 $ 1,204 $ 14,590 $ 526,551 Drilling Services 16,756 3,551 (2,957 ) 1,801 69,256 Total Well Site Services 125,124 20,367 (1,753 ) 16,391 595,807 Downhole Technologies 59,274 4,532 11,600 3,168 677,367 Offshore/Manufactured Products 101,447 5,786 12,664 4,108 710,125 Corporate — 237 (13,811 ) 356 41,827 Total $ 285,845 $ 30,922 $ 8,700 $ 24,023 $ 2,025,126 Revenues Depreciation and Operating income (loss) Capital Total assets Six months ended June 30, 2019 Well Site Services – Completion Services $ 203,962 $ 34,534 $ (4,001 ) $ 18,883 $ 507,028 Drilling Services 20,396 6,565 (7,160 ) 1,914 59,322 Total Well Site Services 224,358 41,099 (11,161 ) 20,797 566,350 Downhole Technologies 101,030 10,322 2,592 7,076 707,878 Offshore/Manufactured Products 189,908 11,560 15,068 3,266 677,644 Corporate — 453 (23,734 ) 438 45,829 Total $ 515,296 $ 63,434 $ (17,235 ) $ 31,577 $ 1,997,701 Revenues Depreciation and Operating income (loss) Capital Total assets Six months ended June 30, 2018 Well Site Services – Completion Services $ 191,208 $ 32,198 $ (3,267 ) $ 22,515 $ 526,551 Drilling Services 34,315 7,419 (5,268 ) 3,026 69,256 Total Well Site Services 225,523 39,617 (8,535 ) 25,541 595,807 Downhole Technologies 105,055 8,416 19,654 5,066 677,367 Offshore/Manufactured Products 208,843 11,600 25,116 7,131 710,125 Corporate — 479 (28,449 ) 523 41,827 Total $ 539,421 $ 60,112 $ 7,786 $ 38,261 $ 2,025,126 One customer individually accounted for 10% of the Company's consolidated product and service revenue for the six months ended June 30, 2018 and individually represented 11% of the Company's consolidated total accounts receivable as of December 31, 2018 . The following table provides supplemental disaggregated revenue from contracts with customers by business segment for the three and six months ended June 30, 2019 and 2018 (in thousands): Well Site Services Downhole Technologies Offshore/Manufactured Products Total 2019 2018 2019 2018 2019 2018 2019 2018 Three months ended June 30 Major revenue categories - Project-driven products $ — $ — $ — $ — $ 38,517 $ 35,225 $ 38,517 $ 35,225 Short-cycle: Completion products and services 103,320 108,368 46,740 59,274 29,265 29,783 179,325 197,425 Drilling services 12,646 16,756 — — — — 12,646 16,756 Other products — — — — 5,746 7,565 5,746 7,565 Total short-cycle 115,966 125,124 46,740 59,274 35,011 37,348 197,717 221,746 Other products and services — — — — 28,451 28,874 28,451 28,874 $ 115,966 $ 125,124 $ 46,740 $ 59,274 $ 101,979 $ 101,447 $ 264,685 $ 285,845 Percentage of total revenue by type - Products — % — % 98 % 98 % 78 % 77 % 47 % 48 % Services 100 % 100 % 2 % 2 % 22 % 23 % 53 % 52 % Well Site Services Downhole Technologies Offshore/Manufactured Products Total 2019 2018 2019 2018 2019 2018 2019 2018 Six months ended June 30 Major revenue categories - Project-driven products $ — $ — $ — $ — $ 65,762 $ 76,024 $ 65,762 $ 76,024 Short-cycle: Completion products and services 203,962 191,208 101,030 105,055 53,540 62,755 358,532 359,018 Drilling services 20,396 34,315 — — — — 20,396 34,315 Other products — — — — 13,484 15,011 13,484 15,011 Total short-cycle 224,358 225,523 101,030 105,055 67,024 77,766 392,412 408,344 Other products and services — — — — 57,122 55,053 57,122 55,053 $ 224,358 $ 225,523 $ 101,030 $ 105,055 $ 189,908 $ 208,843 $ 515,296 $ 539,421 Percentage of total revenue by type - Products — % — % 97 % 98 % 75 % 78 % 47 % 49 % Services 100 % 100 % 3 % 2 % 25 % 22 % 53 % 51 % Revenues from products and services transferred to customers over time accounted for approximately 67% and 68% of consolidated revenues for the six months ended June 30, 2019 and 2018 , respectively. The balance of revenues for the respective periods relates to products and services transferred to customers at a point in time. As of June 30, 2019 , the Company had $142 million of remaining backlog related to contracts with an original expected duration of greater than one year. Approximately 26% of this remaining backlog is expected to be recognized as revenue over the remaining six months of 2019 , with an additional 64% in 2020 and the balance thereafter.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Following the Company's acquisition of GEODynamics in January 2018, the Company determined that certain steel products historically imported by GEODynamics from China for use in its manufacturing process may potentially be subject to anti-dumping and countervailing duties based on recent clarifications/decisions rendered by the U.S. Department of Commerce and the U.S. Court of International Trade. Following these findings, the Company commenced an internal review of this matter and ceased further purchases of these potentially affected Chinese products. As part of the Company's internal review, the Company engaged trade counsel and decided to voluntarily disclose this matter to U.S. Customs and Border Protection in September 2018. In connection with the GEODynamics Acquisition, the seller agreed to indemnify and hold the Company harmless against certain claims related to matters such as this, and the Company has provided notice to and asserted an indemnification claim against the seller. Additionally, the Company is able to set-off payments due under the $25.0 million promissory note (see Note 6 , "Long-term Debt") issued to the seller of GEODynamics in respect of indemnification claims. Such note was scheduled to mature on July 12, 2019, but, because the Company has provided notice to and asserted an indemnification claim, the maturity date of the note is extended until the resolution of such claim. The Company expects that the amount ultimately paid in respect of such note may be reduced as a result of this indemnification claim. Additionally, in the ordinary course of conducting its business, the Company becomes involved in litigation and other claims from private party actions, as well as judicial and administrative proceedings involving governmental authorities at the federal, state and local levels. The Company is a party to various pending or threatened claims, lawsuits and administrative proceedings seeking damages or other remedies concerning its commercial operations, products, employees and other matters, including occasional claims by individuals alleging exposure to hazardous materials as a result of the Company's products or operations. Some of these claims relate to matters occurring prior to the acquisition of businesses (including GEODynamics and Falcon), and some relate to businesses the Company has sold. In certain cases, the Company is entitled to indemnification from the sellers of businesses and, in other cases, the Company has indemnified the buyers of businesses. Although the Company can give no assurance about the outcome of pending legal and administrative proceedings and the effect such outcomes may have on the Company, management believes that any ultimate liability resulting from the outcome of such proceedings, to the extent not otherwise provided for or covered by indemnity or insurance, will not have a material adverse effect on the Company's consolidated financial position, results of operations or liquidity.

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions GEODynamics historically leased certain land and facilities from an equity holder and employee of GEODynamics. In connection with the acquisition of GEODynamics, the Company assumed these leases. The Company exercised its option to purchase the most significant facilities and associated land for approximately $5.4 million in September 2018. Rent expense related to leases with this employee for the three and six months ended June 30, 2019 totaled $44 thousand and $69 thousand , respectively. Rent expense related to leases with this employee for the three months ended June 30, 2018 and the period from January 12, 2018 through June 30, 2018 totaled $142 thousand and $220 thousand , respectively. Additionally, in 2019 GEODynamics purchased products from and sold products to a company in which this employee is an investor. Purchases from this company were $0.4 million and $0.8 million for the three and six months ended June 30, 2019 , respectively. Sales to this company by GEODynamics were $0.6 million for both the three and six months ended June 30, 2019 .

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Policies)	6 Months Ended
	Jun. 30, 2019
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (the "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 February 2016, the FASB issued guidance on leases which, as amended, introduced the recognition of lease assets and lease liabilities by lessees for all leases that are not short-term in nature. The Company adopted this guidance on January 1, 2019, using the optional transition method of recognizing any cumulative effect of adopting this guidance as an adjustment to the opening balance of retained earnings. The cumulative impact of the adoption of the new standard was not material to the Company's consolidated financial statements. Prior periods were not retrospectively adjusted. In addition, the Company elected a package of practical expedients permitted under transition guidance for the new standard which, among other things, allowed for the carryforward of historical lease classification. The Company has lease agreements with lease and non-lease components, which are generally accounted for as a single lease component. Most of the Company's leases do not provide an implicit interest rate. Therefore, the Company's incremental borrowing rate, based on available information at the lease commencement date, is used to determine the present value of lease payments. In connection with the adoption of the new standard, the Company recorded $47.7 million

Business Acquisitions, Goodwi_2

Business Acquisitions, Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Business Acquisition, Pro Forma Information	The following supplemental unaudited pro forma results of operations data for the six months ended June 30, 2018 gives pro forma effect to the consummation of the GEODynamics and Falcon acquisitions as if they had occurred on January 1, 2018. The supplemental unaudited pro forma financial information was prepared based on historical financial information, adjusted to give pro forma effect to fair value adjustments on depreciation and amortization expense, interest expense, and related tax effects, among others. The pro forma results for the six months ended June 30, 2018 also reflect adjustments to exclude the after-tax impact of transaction costs totaling $2.0 million . The supplemental unaudited pro forma financial information may not reflect what the results of the combined operations would have been had the acquisitions occurred on January 1, 2018. As such, it is presented for informational purposes only (in thousands, except per share amount). Six Months Ended Revenue $ 566,045 Net income $ 1,750 Diluted net income per share $ 0.03 Diluted weighted average common shares outstanding 58,922
Schedule of Goodwill	Changes in the carrying amount of goodwill for the six -month period ended June 30, 2019 were as follows (in thousands): Well Site Services Downhole Technologies Offshore/ Total Completion Services Drilling Services Subtotal Balance as of December 31, 2018 Goodwill $ 221,582 $ 22,767 $ 244,349 $ 357,502 $ 162,462 $ 764,313 Accumulated impairment losses (94,528 ) (22,767 ) (117,295 ) — — (117,295 ) 127,054 — 127,054 357,502 162,462 647,018 Foreign currency translation — — — — (34 ) (34 ) Balance as of June 30, 2019 $ 127,054 $ — $ 127,054 $ 357,502 $ 162,428 $ 646,984
Schedule of Finite-Lived Intangible Assets	The following table presents the gross carrying amount, accumulated amortization and net carrying amount for major intangible asset classes as of June 30, 2019 and December 31, 2018 (in thousands): June 30, 2019 December 31, 2018 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer relationships $ 168,266 $ 38,729 $ 129,537 $ 167,811 $ 33,247 $ 134,564 Patents/Technology/Know-how 85,423 27,268 58,155 84,903 23,418 61,485 Noncompete agreements 17,100 8,418 8,682 18,705 7,544 11,161 Tradenames and other 53,708 7,196 46,512 53,708 5,617 48,091 $ 324,497 $ 81,611 $ 242,886 $ 325,127 $ 69,826 $ 255,301

Details of Selected Balance S_2

Details of Selected Balance Sheet Accounts (Tables)	6 Months Ended
	Jun. 30, 2019
Details of Selected Balance Sheet Accounts [Abstract]
Schedule of Accounts Receivable, Net	Additional information regarding selected balance sheet accounts at June 30, 2019 and December 31, 2018 is presented below (in thousands): June 30, December 31, Accounts receivable, net: Trade $ 208,175 $ 227,052 Unbilled revenue 37,518 35,674 Contract assets 20,113 21,201 Other 3,950 6,381 Total accounts receivable 269,756 290,308 Allowance for doubtful accounts (6,303 ) (6,701 ) $ 263,453 $ 283,607
Contract with Customer, Asset and Liability	June 30, December 31, Deferred revenue (contract liabilities) $ 15,360 $ 14,160
Schedule of Inventory, Net	June 30, December 31, Inventories, net: Finished goods and purchased products $ 105,285 $ 96,195 Work in process 21,838 20,552 Raw materials 103,139 111,197 Total inventories 230,262 227,944 Allowance for excess or obsolete inventory (20,256 ) (18,551 ) $ 210,006 $ 209,393
Schedule of Property, Plant and Equipment, Net	Estimated Useful Life (years) June 30, December 31, Property, plant and equipment, net: Land $ 37,758 $ 37,545 Buildings and leasehold improvements 2 – 40 259,981 259,834 Machinery and equipment 1 – 28 493,121 483,629 Completion Services equipment 2 – 10 505,427 492,183 Office furniture and equipment 3 – 10 45,013 43,654 Vehicles 2 – 10 114,729 122,982 Construction in progress 23,337 29,451 Total property, plant and equipment 1,479,366 1,469,278 Accumulated depreciation (959,042 ) (928,851 ) $ 520,324 $ 540,427
Schedule of Other Noncurrent Assets	June 30, December 31, Other noncurrent assets: Deferred compensation plan $ 21,593 $ 20,468 Deferred income taxes 633 761 Other 5,667 5,815 $ 27,893 $ 27,044
Schedule of Accrued Liabilities	June 30, December 31, Accrued liabilities: Accrued compensation $ 20,722 $ 29,867 Insurance liabilities 12,080 9,177 Accrued taxes, other than income taxes 7,990 4,530 Accrued commissions 1,470 1,484 Accrued claims 258 2,983 Other 10,958 12,689 $ 53,478 $ 60,730

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The table below provides a reconciliation of the numerators and denominators of basic and diluted net income (loss) per share for the three and six months ended June 30, 2019 and 2018 (in thousands, except per share amounts): Three Months Ended Six Months Ended 2019 2018 2019 2018 Numerators: Net income (loss) $ (9,740 ) $ 2,742 $ (24,388 ) $ (750 ) Less: Income attributable to unvested restricted stock awards — (44 ) — — Numerator for basic net inco m e (loss) per share (9,740 ) 2,698 (24,388 ) (750 ) Effect of dilutive securities: Unvested restricted stock awards — — — — Numerator for diluted net inco m e (loss) per share $ (9,740 ) $ 2,698 $ (24,388 ) $ (750 ) Denominators: Weighted average number of common shares outstanding 60,458 59,964 60,353 59,389 Less: Weighted average number of unvested restricted stock awards outstanding (1,052 ) (959 ) (1,021 ) (993 ) Denominator for basic net inco m e ( l oss) per share 59,406 59,005 59,332 58,396 Effect of dilutive securities: Unvested restricted stock awards — — — — Assumed exercise of stock options — — — — 1.50% convertible senior notes — — — — — — — — Denominator for diluted net inco m e (loss) per share 59,406 59,005 59,332 58,396 Net income (loss) per share: Basic $ (0.16 ) $ 0.05 $ (0.41 ) $ (0.01 ) Diluted (0.16 ) 0.05 (0.41 ) (0.01 )

Long-term Debt (Tables)

Long-term Debt (Tables)	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	The following table presents the carrying amount of the Notes in the consolidated balance sheets (in thousands): June 30, December 31, Principal amount of the liability component $ 200,000 $ 200,000 Less: Unamortized discount 25,669 28,825 Less: Unamortized issuance costs 3,668 4,073 Net carrying amount of the liability $ 170,663 $ 167,102 As of June 30, 2019 and December 31, 2018 , long-term debt consisted of the following (in thousands): June 30, December 31, Revolving credit facility (1) $ 97,465 $ 134,096 1.50% convertible senior notes (2) 170,663 167,102 Promissory note 25,000 25,000 Other debt and finance lease obligations 5,239 5,540 Total debt 298,367 331,738 Less: Current portion (25,583 ) (25,561 ) Total long-term debt $ 272,784 $ 306,177 ____________________ (1) Presented net of $1.7 million and $2.0 million of unamortized debt issuance costs as of June 30, 2019 and December 31, 2018 , respectively. (2) The principal amount of the 1.50% convertible senior notes is $200.0 million . See " 1.50% Convertible Senior Notes" below.

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Lease, Cost	The following tables summarize the financial statement information regarding of the Company's operating leases for the three and six months ended June 30, 2019 (in thousands): Three Months Ended Six Months Ended Operating lease expense components: Leases with initial term of greater than 12 months $ 2,897 $ 5,858 Leases with initial term of 12 months or less 1,413 2,766 $ 4,310 $ 8,624 Operating lease assets obtained in exchange for operating lease liabilities: Upon adoption of standard (January 1, 2019) $ 47,721 Subsequent to adoption 5,332 Non-cash operating lease amounts $ 53,053
Maturities of Operating Lease Liabilities	The following table provides the maturities of operating lease liabilities as of June 30, 2019 (in thousands): Operating Leases 2019 (less six months ended June 30) $ 5,654 2020 10,125 2021 8,282 2022 6,176 2023 5,192 After 2023 22,861 Total lease payments 58,290 Less: Imputed interest (10,025 ) Present value of operating lease liabilities 48,265 Less: Current portion (8,997 ) Total long-term operating lease liabilities $ 39,268 Weighted-average remaining lease term (years) 7.7 Weighted-average discount rate 5.0 %

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Schedule of Common Stock Outstanding Roll Forward	The following table provides details with respect to the changes to the number of shares of common stock, $0.01 par value, outstanding during the first six months of 2019 : Shares of common stock outstanding – December 31, 2018 59,969,695 Restricted stock awards, net of forfeitures 767,864 Shares withheld for taxes on vesting of restricted stock awards and transferred to treasury (204,505 ) Purchase of treasury stock (50,800 ) Shares of common stock outstanding – June 30, 2019 60,482,254

Long-Term Incentive Compensat_2

Long-Term Incentive Compensation (Tables)	6 Months Ended
	Jun. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Stock Option Activity	The following table presents a summary of activity for stock options, service-based restricted stock awards and performance-based stock unit awards for the six months ended June 30, 2019 . Stock Options Service-based Restricted Stock Performance-based Stock Units Outstanding – December 31, 2018 681,894 929,554 227,124 Granted — 674,923 76,793 Vested/Exercised — (534,661 ) (105,988 ) Forfeited (45,624 ) (13,047 ) — Outstanding – June 30, 2019 636,270 1,056,769 197,929 Weighted average grant date fair value (2019 awards) $ — $ 17.65 $ 17.58

Segments and Related Informat_2

Segments and Related Information (Tables)	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Financial information by business segment for the three and six months ended June 30, 2019 and 2018 is summarized in the following tables (in thousands). Revenues Depreciation and Operating income (loss) Capital Total assets Three months ended June 30, 2019 Well Site Services – Completion Services $ 103,320 $ 17,248 $ (507 ) $ 7,201 $ 507,028 Drilling Services 12,646 3,224 (2,601 ) 965 59,322 Total Well Site Services 115,966 20,472 (3,108 ) 8,166 566,350 Downhole Technologies 46,740 5,256 (1,462 ) 3,460 707,878 Offshore/Manufactured Products 101,979 5,973 9,809 1,720 677,644 Corporate — 182 (11,634 ) 309 45,829 Total $ 264,685 $ 31,883 $ (6,395 ) $ 13,655 $ 1,997,701 Revenues Depreciation and Operating income (loss) Capital Total assets Three months ended June 30, 2018 Well Site Services – Completion Services $ 108,368 $ 16,816 $ 1,204 $ 14,590 $ 526,551 Drilling Services 16,756 3,551 (2,957 ) 1,801 69,256 Total Well Site Services 125,124 20,367 (1,753 ) 16,391 595,807 Downhole Technologies 59,274 4,532 11,600 3,168 677,367 Offshore/Manufactured Products 101,447 5,786 12,664 4,108 710,125 Corporate — 237 (13,811 ) 356 41,827 Total $ 285,845 $ 30,922 $ 8,700 $ 24,023 $ 2,025,126 Revenues Depreciation and Operating income (loss) Capital Total assets Six months ended June 30, 2019 Well Site Services – Completion Services $ 203,962 $ 34,534 $ (4,001 ) $ 18,883 $ 507,028 Drilling Services 20,396 6,565 (7,160 ) 1,914 59,322 Total Well Site Services 224,358 41,099 (11,161 ) 20,797 566,350 Downhole Technologies 101,030 10,322 2,592 7,076 707,878 Offshore/Manufactured Products 189,908 11,560 15,068 3,266 677,644 Corporate — 453 (23,734 ) 438 45,829 Total $ 515,296 $ 63,434 $ (17,235 ) $ 31,577 $ 1,997,701 Revenues Depreciation and Operating income (loss) Capital Total assets Six months ended June 30, 2018 Well Site Services – Completion Services $ 191,208 $ 32,198 $ (3,267 ) $ 22,515 $ 526,551 Drilling Services 34,315 7,419 (5,268 ) 3,026 69,256 Total Well Site Services 225,523 39,617 (8,535 ) 25,541 595,807 Downhole Technologies 105,055 8,416 19,654 5,066 677,367 Offshore/Manufactured Products 208,843 11,600 25,116 7,131 710,125 Corporate — 479 (28,449 ) 523 41,827 Total $ 539,421 $ 60,112 $ 7,786 $ 38,261 $ 2,025,126
Supplemental Revenue Information by Segments	The following table provides supplemental disaggregated revenue from contracts with customers by business segment for the three and six months ended June 30, 2019 and 2018 (in thousands): Well Site Services Downhole Technologies Offshore/Manufactured Products Total 2019 2018 2019 2018 2019 2018 2019 2018 Three months ended June 30 Major revenue categories - Project-driven products $ — $ — $ — $ — $ 38,517 $ 35,225 $ 38,517 $ 35,225 Short-cycle: Completion products and services 103,320 108,368 46,740 59,274 29,265 29,783 179,325 197,425 Drilling services 12,646 16,756 — — — — 12,646 16,756 Other products — — — — 5,746 7,565 5,746 7,565 Total short-cycle 115,966 125,124 46,740 59,274 35,011 37,348 197,717 221,746 Other products and services — — — — 28,451 28,874 28,451 28,874 $ 115,966 $ 125,124 $ 46,740 $ 59,274 $ 101,979 $ 101,447 $ 264,685 $ 285,845 Percentage of total revenue by type - Products — % — % 98 % 98 % 78 % 77 % 47 % 48 % Services 100 % 100 % 2 % 2 % 22 % 23 % 53 % 52 % Well Site Services Downhole Technologies Offshore/Manufactured Products Total 2019 2018 2019 2018 2019 2018 2019 2018 Six months ended June 30 Major revenue categories - Project-driven products $ — $ — $ — $ — $ 65,762 $ 76,024 $ 65,762 $ 76,024 Short-cycle: Completion products and services 203,962 191,208 101,030 105,055 53,540 62,755 358,532 359,018 Drilling services 20,396 34,315 — — — — 20,396 34,315 Other products — — — — 13,484 15,011 13,484 15,011 Total short-cycle 224,358 225,523 101,030 105,055 67,024 77,766 392,412 408,344 Other products and services — — — — 57,122 55,053 57,122 55,053 $ 224,358 $ 225,523 $ 101,030 $ 105,055 $ 189,908 $ 208,843 $ 515,296 $ 539,421 Percentage of total revenue by type - Products — % — % 97 % 98 % 75 % 78 % 47 % 49 % Services 100 % 100 % 3 % 2 % 25 % 22 % 53 % 51 %

Recent Accounting Pronounceme_3

Recent Accounting Pronouncements Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets, net	$ 48,235
Operating lease liabilities	$ 48,265
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets, net		$ 47,700
Operating lease liabilities		$ 47,700

Business Acquisitions, Goodwi_3

Business Acquisitions, Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	Feb. 28, 2018	Jan. 12, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Business Combination Segment Allocation [Line Items]
Transaction costs						$ 2,600
Transactions costs			$ 9,740	$ (2,742)	$ 24,388	750
Amortization expense			$ 6,800	$ 6,400	$ 13,500	12,000
GEODynamics, Inc.
Business Combination Segment Allocation [Line Items]
Acquisition price		$ 615,300
Payments to acquire business		$ 295,400
Shares issued in acquisition (in shares)		8,660
Consideration transferred, equity interest issued		$ 295,000
Business acquisition, share price (in dollars per share)		$ 34.05
Consideration transferred, unsecured promissory note		$ 25,000
Falcon
Business Combination Segment Allocation [Line Items]
Acquisition price	$ 84,200
Unsecured Debt
Business Combination Segment Allocation [Line Items]
Stated interest rate		2.50%
Acquisition-related Costs
Business Combination Segment Allocation [Line Items]
Transactions costs						$ 2,000

Business Acquisitions, Goodwi_4

Business Acquisitions, Goodwill and Other Intangible Assets - Summary of Pro Forma Information (Details) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)$ / sharesshares
Business Combinations [Abstract]
Revenue	$ 566,045
Net income	$ 1,750
Diluted net income per share (in dollars per share) | $ / shares	$ 0.03
Diluted weighted average common shares outstanding (in shares) | shares	58,922

Business Acquisitions, Goodwi_5

Business Acquisitions, Goodwill and Other Intangible Assets - Changes in the Carrying Value of Goodwill (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Business Combination Segment Allocation [Line Items]
Goodwill		$ 764,313
Accumulated impairment losses		(117,295)
Changes in carrying value of goodwill
Goodwill, net, beginning of period	$ 647,018
Foreign currency translation	(34)
Goodwill, net, end of period	646,984
Well Site Services
Business Combination Segment Allocation [Line Items]
Goodwill		244,349
Accumulated impairment losses		(117,295)
Changes in carrying value of goodwill
Goodwill, net, beginning of period	127,054
Foreign currency translation	0
Goodwill, net, end of period	127,054
Downhole Technology
Business Combination Segment Allocation [Line Items]
Goodwill		357,502
Accumulated impairment losses		0
Changes in carrying value of goodwill
Goodwill, net, beginning of period	357,502
Foreign currency translation	0
Goodwill, net, end of period	357,502
Offshore / Manufactured Products
Business Combination Segment Allocation [Line Items]
Goodwill		162,462
Accumulated impairment losses		0
Changes in carrying value of goodwill
Goodwill, net, beginning of period	162,462
Foreign currency translation	(34)
Goodwill, net, end of period	162,428
Completion Services | Well Site Services
Business Combination Segment Allocation [Line Items]
Goodwill		221,582
Accumulated impairment losses		(94,528)
Changes in carrying value of goodwill
Goodwill, net, beginning of period	127,054
Foreign currency translation	0
Goodwill, net, end of period	127,054
Drilling Services | Well Site Services
Business Combination Segment Allocation [Line Items]
Goodwill		22,767
Accumulated impairment losses		$ (22,767)
Changes in carrying value of goodwill
Goodwill, net, beginning of period	0
Foreign currency translation	0
Goodwill, net, end of period	$ 0

Business Acquisitions, Goodwi_6

Business Acquisitions, Goodwill and Other Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 324,497	$ 325,127
Accumulated Amortization	81,611	69,826
Net Carrying Amount	242,886	255,301
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	168,266	167,811
Accumulated Amortization	38,729	33,247
Net Carrying Amount	129,537	134,564
Patents/Technology/Know-how
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	85,423	84,903
Accumulated Amortization	27,268	23,418
Net Carrying Amount	58,155	61,485
Noncompete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	17,100	18,705
Accumulated Amortization	8,418	7,544
Net Carrying Amount	8,682	11,161
Tradenames and other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	53,708	53,708
Accumulated Amortization	7,196	5,617
Net Carrying Amount	$ 46,512	$ 48,091

Details of Selected Balance S_3

Details of Selected Balance Sheet Accounts - Accounts Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	$ 269,756	$ 290,308
Allowance for doubtful accounts	(6,303)	(6,701)
Accounts receivable, net	263,453	283,607
Trade
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	208,175	227,052
Unbilled revenue
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	37,518	35,674
Contract assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	20,113	21,201
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	$ 3,950	$ 6,381

Details of Selected Balance S_4

Details of Selected Balance Sheet Accounts - Contract Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Details of Selected Balance Sheet Accounts [Abstract]
Deferred revenue (contract liabilities)	$ 15,360	$ 14,160

Details of Selected Balance S_5

Details of Selected Balance Sheet Accounts Details of Selected Balance Sheet Accounts - Narrative (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)
Details of Selected Balance Sheet Accounts [Abstract]
Increase (decrease) in contract with customer, asset	$ (1.1)
Contract with customer, asset, increase due to revenue recognized	12.1
Contract with customer, asset, reclassified to receivable	13.1
Increase (decrease) in contract with customer, liability	1.2
Contract with customer, liability, revenue recognized	5
Contract with customer, liability, increase due to billings	$ 5.9

Details of Selected Balance S_6

Details of Selected Balance Sheet Accounts - Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Details of Selected Balance Sheet Accounts [Abstract]
Finished goods and purchased products	$ 105,285	$ 96,195
Work in process	21,838	20,552
Raw materials	103,139	111,197
Total inventories	230,262	227,944
Allowance for excess or obsolete inventory	(20,256)	(18,551)
Inventories, net	$ 210,006	$ 209,393

Details of Selected Balance S_7

Details of Selected Balance Sheet Accounts - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 1,479,366	$ 1,469,278
Accumulated depreciation	(959,042)	(928,851)
Property, plant, and equipment, net	520,324	540,427
Land
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	37,758	37,545
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 259,981	259,834
Buildings and leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	2 years
Buildings and leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 493,121	483,629
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	1 year
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	28 years
Completion Services equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 505,427	492,183
Completion Services equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	2 years
Completion Services equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 45,013	43,654
Office furniture and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Office furniture and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Vehicles
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 114,729	122,982
Vehicles | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	2 years
Vehicles | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Construction in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 23,337	$ 29,451

Details of Selected Balance S_8

Details of Selected Balance Sheet Accounts - Other Noncurrent Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Details of Selected Balance Sheet Accounts [Abstract]
Deferred compensation plan	$ 21,593	$ 20,468
Deferred income taxes	633	761
Other	5,667	5,815
Other noncurrent assets	$ 27,893	$ 27,044

Details of Selected Balance S_9

Details of Selected Balance Sheet Accounts - Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Details of Selected Balance Sheet Accounts [Abstract]
Accrued compensation	$ 20,722	$ 29,867
Insurance liabilities	12,080	9,177
Accrued taxes, other than income taxes	7,990	4,530
Accrued commissions	1,470	1,484
Accrued claims	258	2,983
Other	10,958	12,689
Accrued liabilities	$ 53,478	$ 60,730

Net Income (Loss) Per Share - S

Net Income (Loss) Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Numerators:
Net income (loss)	$ (9,740)	$ 2,742	$ (24,388)	$ (750)
Less: Income attributable to unvested restricted stock awards	0	(44)	0	0
Numerator for basic net income (loss) per share	(9,740)	2,698	(24,388)	(750)
Effect of dilutive securities:
Unvested restricted stock awards	0	0	0	0
Numerator for diluted net income (loss) per share	$ (9,740)	$ 2,698	$ (24,388)	$ (750)
Denominators:
Weighted average number of common shares outstanding (in shares)	60,458	59,964	60,353	59,389
Less: Weighted average number of unvested restricted stock awards outstanding (in shares)	(1,052)	(959)	(1,021)	(993)
Denominator for basic net income (loss) per share (in shares)	59,406	59,005	59,332	58,396
Effect of dilutive securities:
Incremental common shares attributable to dilutive effect of conversion of debt securities (in shares)	0	0	0	0
Incremental common shares attributable to dilutive effect (in shares)	0	0	0	0
Denominator for diluted net income (loss) per share (in shares)	59,406	59,005	59,332	58,396
Net income (loss) per share:
Basic (in dollars per share)	$ (0.16)	$ 0.05	$ (0.41)	$ (0.01)
Diluted (in dollars per share)	$ (0.16)	$ 0.05	$ (0.41)	$ (0.01)
Restricted Stock
Effect of dilutive securities:
Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares)	0	0	0	0
Employee Stock Option
Effect of dilutive securities:
Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares)	0	0	0	0
1.5% Convertible Unsecured Senior Notes
Net income (loss) per share:
Stated interest rate	1.50%	1.50%	1.50%	1.50%

Net Income (Loss) Per Share - N

Net Income (Loss) Per Share - Narrative (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	664	695	676	697
1.5% Convertible Unsecured Senior Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stated interest rate	1.50%	1.50%	1.50%	1.50%

Long-term Debt - Summary of Lon

Long-term Debt - Summary of Long-term Debt (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Jan. 30, 2018	Jan. 12, 2018
Debt Instrument [Line Items]
Total debt	$ 298,367,000	$ 331,738,000
Less: Current portion	(25,583,000)	(25,561,000)
Long-term debt	272,784,000	306,177,000
Unamortized debt issuance costs	1,700,000	2,000,000
Convertible Debt
Debt Instrument [Line Items]
Total debt	170,663,000	167,102,000
Unsecured Debt
Debt Instrument [Line Items]
Total debt	25,000,000	25,000,000
Stated interest rate					2.50%
Other debt and finance lease obligations
Debt Instrument [Line Items]
Total debt	5,239,000	5,540,000
Revolving Credit Facility
Debt Instrument [Line Items]
Total debt	$ 97,465,000	134,096,000
1.5% Convertible Unsecured Senior Notes
Debt Instrument [Line Items]
Stated interest rate	1.50%		1.50%
1.5% Convertible Unsecured Senior Notes | Convertible Debt
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ 3,668,000	4,073,000
Stated interest rate				1.50%
Long-term debt, gross	$ 200,000,000	$ 200,000,000		$ 200,000,000

Long-term Debt - Narrative (Det

Long-term Debt - Narrative (Details)	Jan. 30, 2018USD ($)day$ / shares	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2018USD ($)	Jan. 12, 2018USD ($)
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 350,000,000		$ 350,000,000
Additional borrowing capacity		500,000,000		500,000,000
Long-term line of credit		99,200,000		99,200,000
Letters of credit outstanding		16,100,000		16,100,000
Remaining borrowing capacity		96,000,000		$ 96,000,000
Minimum interest coverage ratio				3
Maximum senior secured leverage ratio				2.25
Maximum leverage ratio				3.75
Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 50,000,000		$ 50,000,000
Unsecured Debt
Debt Instrument [Line Items]
Stated interest rate							2.50%
Debt instrument, face amount							$ 25,000,000
1.5% Convertible Unsecured Senior Notes
Debt Instrument [Line Items]
Stated interest rate		1.50%	1.50%	1.50%	1.50%
1.5% Convertible Unsecured Senior Notes | Convertible Debt
Debt Instrument [Line Items]
Stated interest rate	1.50%
Principal amount of the liability component	$ 200,000,000	$ 200,000,000		$ 200,000,000		$ 200,000,000
Proceeds from issuance of debt	$ 194,000,000
Effective interest rate percentage	6.00%
Interest expense		2,500,000	$ 2,400,000	5,100,000	$ 4,100,000
Interest Expense, Debt, Excluding Amortization		$ 800,000	$ 800,000	$ 1,500,000	$ 1,300,000
Conversion ratio	0.0222748
Conversion price (in dollars per share) | $ / shares	$ 44.89
Percentage of conversion price	130.00%
Threshold trading days | day	20
Threshold consecutive trading days | day	30
Measurement period | day	5
Threshold consecutive trading days, sale price per share | day	5
Percentage of sales price per share	98.00%
Minimum | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage				0.25%
Maximum | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage				0.50%
London Interbank Offered Rate (LIBOR) | Minimum | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate				1.75%
London Interbank Offered Rate (LIBOR) | Maximum | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate				3.00%
Base Rate | Minimum | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate				0.75%
Base Rate | Maximum | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate				2.00%

Long-term Debt - Carrying Amoun

Long-term Debt - Carrying Amount of the 1.50% Notes (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018	Jan. 30, 2018
Debt Instrument [Line Items]
Less: Unamortized issuance costs	$ 1,700,000	$ 2,000,000
Net carrying amount of the liability	272,784,000	306,177,000
Convertible Debt | 1.5% Convertible Unsecured Senior Notes
Debt Instrument [Line Items]
Principal amount of the liability component	200,000,000	200,000,000	$ 200,000,000
Less: Unamortized discount	25,669,000	28,825,000
Less: Unamortized issuance costs	3,668,000	4,073,000
Net carrying amount of the liability	$ 170,663,000	$ 167,102,000

Fair Value Measurements (Detail

Fair Value Measurements (Details) - 1.5% Convertible Unsecured Senior Notes - Convertible Debt - USD ($)	Jun. 30, 2019	Dec. 31, 2018	Jan. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal amount of the liability component	$ 200,000,000	$ 200,000,000	$ 200,000,000
Fair Value, Inputs, Level 1 | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value	$ 178,000,000	$ 166,000,000

Leases - Narrative (Details)

Leases - Narrative (Details) $ in Millions	Jun. 30, 2019USD ($)
Lessee, Lease, Description [Line Items]
Finance lease liability	$ 0.7
Minimum
Lessee, Lease, Description [Line Items]
Operating lease, extension term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease, extension term	20 years

Leases - Financial Information

Leases - Financial Information of The Company's Operating Leases (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2019
Operating lease expense components:
Leases with initial term of greater than 12 months		$ 2,897		$ 5,858
Leases with initial term of 12 months or less		1,413		2,766
Operating lease expense		$ 4,310		8,624
Operating lease assets obtained in exchange for operating lease liabilities:
Non-cash operating lease amounts			$ 5,332	$ 53,053
Accounting Standards Update 2016-02
Operating lease assets obtained in exchange for operating lease liabilities:
Non-cash operating lease amounts	$ 47,721

Leases - Maturity Lease Liabili

Leases - Maturity Lease Liabilities (Details) $ in Thousands	Jun. 30, 2019USD ($)
Operating Leases
2019 (less six months ended June 30)	$ 5,654
2020	10,125
2021	8,282
2022	6,176
2023	5,192
After 2023	22,861
Total lease payments	58,290
Less: Imputed interest	(10,025)
Present value of operating lease liabilities	48,265
Less: Current portion	(8,997)
Total long-term operating lease liabilities	$ 39,268
Weighted-average remaining lease term (years)	7 years 8 months 12 days
Weighted-average discount rate	5.00%

Stockholders' Equity - Narrativ

Stockholders' Equity - Narrative (Details) - USD ($)	Jul. 24, 2019	Jun. 30, 2019	Dec. 31, 2018	Jul. 29, 2015
Equity, Class of Treasury Stock [Line Items]
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)		25,000,000	25,000,000
Preferred stock, par value (in dollars per share)		$ 0.01	$ 0.01
Preferred stock, shares issued (in shares)		0	0
Preferred stock, shares outstanding (in shares)		0	0
Number of shares repurchased (in shares)		50,800
Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Authorized amount				$ 150,000,000
Remaining authorized repurchase amount		$ 119,800,000
Subsequent Event | Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Period in force	1 year

Stockholders' Equity - Common S

Stockholders' Equity - Common Stock Outstanding Activity (Details)	6 Months Ended
	Jun. 30, 2019shares
Changes in Common Stock Outstanding [Roll Forward]
Shares of common stock outstanding – December 31, 2018 (in shares)	59,969,695
Restricted stock awards, net of forfeitures (in shares)	767,864
Shares withheld for taxes on vesting of restricted stock awards and transferred to treasury (in shares)	(204,505)
Purchase of treasury stock (in shares)	(50,800)
Shares of common stock outstanding – June 30, 2019 (in shares)	60,482,254

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss - (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	$ 71,260		$ 71,260		$ 71,397
Currency translation adjustments	$ (2,329)	$ (13,733)	$ 137	$ (8,699)
United Kingdom, Pounds
Accumulated Other Comprehensive Income (Loss) [Line Items]
Exchange rate weakened		2.00%		2.00%
Brazil, Brazil Real
Accumulated Other Comprehensive Income (Loss) [Line Items]
Exchange rate weakened		14.00%		14.00%

Long-Term Incentive Compensat_3

Long-Term Incentive Compensation - Stock Option Activity (Details)	6 Months Ended
	Jun. 30, 2019$ / sharesshares
Stock Options
Outstanding – December 31, 2018 (in shares)	681,894
Granted (in shares)	0
Vested/Exercised (in shares)	0
Forfeited (in shares)	(45,624)
Outstanding – June 30, 2019 (in shares)	636,270
Weighted average grant date fair value (2019 awards) (in dollars per share) | $ / shares	$ 0
Service-based Restricted Stock
Service-based and Performance-based Stock
Outstanding – December 31, 2018 (in shares)	929,554
Granted (in shares)	674,923
Vested/Exercised (in shares)	(534,661)
Forfeited (in shares)	(13,047)
Outstanding – June 30, 2019 (in shares)	1,056,769
Weighted average grant date fair value (2019 awards) (in dollars per share) | $ / shares	$ 17.65
Performance-based Stock Units
Service-based and Performance-based Stock
Outstanding – December 31, 2018 (in shares)	227,124
Granted (in shares)	76,793
Vested/Exercised (in shares)	(105,988)
Forfeited (in shares)	0
Outstanding – June 30, 2019 (in shares)	197,929
Weighted average grant date fair value (2019 awards) (in dollars per share) | $ / shares	$ 17.58

Long-Term Incentive Compensat_4

Long-Term Incentive Compensation - Narrative (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation arrangement, recorded liability		$ 1,300,000		$ 1,300,000
Deferred compensation arrangement, requisite performance period		3 years		3 years
Stock-based compensation expense	$ 4,200,000		$ 6,000,000		$ 8,600,000	$ 11,200,000
Share-based compensation costs not yet recognized	$ 22,400,000				$ 22,400,000
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation arrangement, potential maximum liability		$ 0		$ 0
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation arrangement, potential maximum liability		$ 2,700,000		$ 2,700,000
Service-based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)					3 years
Performance-based Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period (in years)					3 years
Percentage of additional performance-based awards issued (in shares)	200.00%				200.00%

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (263)	$ 1,739	$ (540)	$ 510
Effective income tax rate	2.60%	38.80%	2.20%	212.50%

Segments and Related Informat_3

Segments and Related Information - Narrative (Details) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2019USD ($)segment	Jun. 30, 2018	Dec. 31, 2018
Segment Reporting [Abstract]
Number of reportable segments | segment	3
Segment Reporting Information [Line Items]
Revenue, remaining performance obligation | $	$ 142
Revenue, remaining performance obligation, percentage of obligations, remaining fiscal year	26.00%
Revenue, remaining performance obligation, percentage of obligations, remaining in year two	64.00%
Customer Concentration Risk | Sales Revenue, Net | One Customer
Segment Reporting Information [Line Items]
Concentration risk, percentage		10.00%
Customer Concentration Risk | Accounts Receivable | One Customer
Segment Reporting Information [Line Items]
Concentration risk, percentage			11.00%
Transferred over Time
Segment Reporting Information [Line Items]
Revenue from contract with customer, percentage of revenue	67.00%	68.00%

Segments and Related Informat_4

Segments and Related Information - Financial Information by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Revenues	$ 264,685	$ 285,845	$ 515,296	$ 539,421
Depreciation and amortization	31,883	30,922	63,434	60,112
Operating income (loss)	(6,395)	8,700	(17,235)	7,786
Capital expenditures	13,655	24,023	31,577	38,261
Total assets	1,997,701	2,025,126	1,997,701	2,025,126	$ 2,003,821
Corporate
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Depreciation and amortization	182	237	453	479
Operating income (loss)	(11,634)	(13,811)	(23,734)	(28,449)
Capital expenditures	309	356	438	523
Total assets	45,829	41,827	45,829	41,827
Total Well Site Services
Segment Reporting Information [Line Items]
Revenues	115,966	125,124	224,358	225,523
Total Well Site Services | Operating Segments
Segment Reporting Information [Line Items]
Revenues	115,966	125,124	224,358	225,523
Depreciation and amortization	20,472	20,367	41,099	39,617
Operating income (loss)	(3,108)	(1,753)	(11,161)	(8,535)
Capital expenditures	8,166	16,391	20,797	25,541
Total assets	566,350	595,807	566,350	595,807
Downhole Technologies
Segment Reporting Information [Line Items]
Revenues	46,740	59,274	101,030	105,055
Downhole Technologies | Operating Segments
Segment Reporting Information [Line Items]
Revenues	46,740	59,274	101,030	105,055
Depreciation and amortization	5,256	4,532	10,322	8,416
Operating income (loss)	(1,462)	11,600	2,592	19,654
Capital expenditures	3,460	3,168	7,076	5,066
Total assets	707,878	677,367	707,878	677,367
Offshore / Manufactured Products
Segment Reporting Information [Line Items]
Revenues	101,979	101,447	189,908	208,843
Offshore / Manufactured Products | Operating Segments
Segment Reporting Information [Line Items]
Revenues	101,979	101,447	189,908	208,843
Depreciation and amortization	5,973	5,786	11,560	11,600
Operating income (loss)	9,809	12,664	15,068	25,116
Capital expenditures	1,720	4,108	3,266	7,131
Total assets	677,644	710,125	677,644	710,125
Completion Services | Total Well Site Services | Operating Segments
Segment Reporting Information [Line Items]
Revenues	103,320	108,368	203,962	191,208
Depreciation and amortization	17,248	16,816	34,534	32,198
Operating income (loss)	(507)	1,204	(4,001)	(3,267)
Capital expenditures	7,201	14,590	18,883	22,515
Total assets	507,028	526,551	507,028	526,551
Drilling Services | Total Well Site Services | Operating Segments
Segment Reporting Information [Line Items]
Revenues	12,646	16,756	20,396	34,315
Depreciation and amortization	3,224	3,551	6,565	7,419
Operating income (loss)	(2,601)	(2,957)	(7,160)	(5,268)
Capital expenditures	965	1,801	1,914	3,026
Total assets	$ 59,322	$ 69,256	$ 59,322	$ 69,256

Segments and Related Informat_5

Segments and Related Information - Supplemental Revenue Information by Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Revenues	$ 264,685	$ 285,845	$ 515,296	$ 539,421
Project-driven products
Segment Reporting Information [Line Items]
Revenues	38,517	35,225	65,762	76,024
Short-cycle products
Segment Reporting Information [Line Items]
Revenues	197,717	221,746	392,412	408,344
Completion products and services
Segment Reporting Information [Line Items]
Revenues	179,325	197,425	358,532	359,018
Drilling services
Segment Reporting Information [Line Items]
Revenues	12,646	16,756	20,396	34,315
Other products
Segment Reporting Information [Line Items]
Revenues	5,746	7,565	13,484	15,011
Other products and services
Segment Reporting Information [Line Items]
Revenues	28,451	28,874	57,122	55,053
Products
Segment Reporting Information [Line Items]
Revenues	124,965	136,182	241,293	265,008
Services
Segment Reporting Information [Line Items]
Revenues	139,720	149,663	274,003	274,413
Total Well Site Services
Segment Reporting Information [Line Items]
Revenues	115,966	125,124	224,358	225,523
Total Well Site Services | Project-driven products
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Total Well Site Services | Short-cycle products
Segment Reporting Information [Line Items]
Revenues	115,966	125,124	224,358	225,523
Total Well Site Services | Completion products and services
Segment Reporting Information [Line Items]
Revenues	103,320	108,368	203,962	191,208
Total Well Site Services | Drilling services
Segment Reporting Information [Line Items]
Revenues	12,646	16,756	20,396	34,315
Total Well Site Services | Other products
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Total Well Site Services | Other products and services
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Downhole Technologies
Segment Reporting Information [Line Items]
Revenues	46,740	59,274	101,030	105,055
Downhole Technologies | Project-driven products
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Downhole Technologies | Short-cycle products
Segment Reporting Information [Line Items]
Revenues	46,740	59,274	101,030	105,055
Downhole Technologies | Completion products and services
Segment Reporting Information [Line Items]
Revenues	46,740	59,274	101,030	105,055
Downhole Technologies | Drilling services
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Downhole Technologies | Other products
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Downhole Technologies | Other products and services
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Offshore / Manufactured Products
Segment Reporting Information [Line Items]
Revenues	101,979	101,447	189,908	208,843
Offshore / Manufactured Products | Project-driven products
Segment Reporting Information [Line Items]
Revenues	38,517	35,225	65,762	76,024
Offshore / Manufactured Products | Short-cycle products
Segment Reporting Information [Line Items]
Revenues	35,011	37,348	67,024	77,766
Offshore / Manufactured Products | Completion products and services
Segment Reporting Information [Line Items]
Revenues	29,265	29,783	53,540	62,755
Offshore / Manufactured Products | Drilling services
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Offshore / Manufactured Products | Other products
Segment Reporting Information [Line Items]
Revenues	5,746	7,565	13,484	15,011
Offshore / Manufactured Products | Other products and services
Segment Reporting Information [Line Items]
Revenues	$ 28,451	$ 28,874	$ 57,122	$ 55,053
Sales Revenue, Net | Products
Segment Reporting Information [Line Items]
Revenue from contract with customer, percentage of revenue	47.00%	48.00%	47.00%	49.00%
Sales Revenue, Net | Services
Segment Reporting Information [Line Items]
Revenue from contract with customer, percentage of revenue	53.00%	52.00%	53.00%	51.00%
Sales Revenue, Net | Total Well Site Services | Products
Segment Reporting Information [Line Items]
Revenue from contract with customer, percentage of revenue	0.00%	0.00%	0.00%	0.00%
Sales Revenue, Net | Total Well Site Services | Services
Segment Reporting Information [Line Items]
Revenue from contract with customer, percentage of revenue	100.00%	100.00%	100.00%	100.00%
Sales Revenue, Net | Downhole Technologies | Products
Segment Reporting Information [Line Items]
Revenue from contract with customer, percentage of revenue	98.00%	98.00%	97.00%	98.00%
Sales Revenue, Net | Downhole Technologies | Services
Segment Reporting Information [Line Items]
Revenue from contract with customer, percentage of revenue	2.00%	2.00%	3.00%	2.00%
Sales Revenue, Net | Offshore / Manufactured Products | Products
Segment Reporting Information [Line Items]
Revenue from contract with customer, percentage of revenue	78.00%	77.00%	75.00%	78.00%
Sales Revenue, Net | Offshore / Manufactured Products | Services
Segment Reporting Information [Line Items]
Revenue from contract with customer, percentage of revenue	22.00%	23.00%	25.00%	22.00%

Commitments and Contingencies (

Commitments and Contingencies (Details)	Jan. 12, 2018USD ($)
Unsecured Debt
Business Acquisition [Line Items]
Debt instrument, face amount	$ 25,000,000

Related Party Transactions (Det

Related Party Transactions (Details) - Affiliated Entity - USD ($) $ in Thousands	1 Months Ended	3 Months Ended			6 Months Ended
	Sep. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019
Related Party Transaction [Line Items]
Related party transaction, purchases from related party		$ 400			$ 800
Revenue from related parties		600			600
Leased Assets Purchased
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	$ 5,400
Rent Expense
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction		$ 44	$ 142	$ 220	$ 69