Schedule of Financial Information for Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Revenue from external customers	$ 50,173	$ 20,241	$ 128,415	$ 73,993
Loss before income taxes	(178,781)	(31,880)	(236,258)	(100,303)
Segment assets as of September 30, 2017	548,488		548,488		$ 723,457
Depreciation and amortization	11,704	12,051	35,805	36,499
Operating Segment \| Oilfield Technologies and Services
Segment Reporting Information [Line Items]
Revenue from external customers	44,847	16,899	111,669	63,984
Loss before income taxes	(178,603)	(31,278)	(235,803)	(97,922)
Segment assets as of September 30, 2017	533,814		533,814
Depreciation and amortization	11,395	11,668	34,829	35,274
Operating Segment \| Environmental Products and Services
Segment Reporting Information [Line Items]
Revenue from external customers	5,326	3,342	16,746	10,009
Loss before income taxes	(178)	(602)	(455)	(2,381)
Segment assets as of September 30, 2017	14,674		14,674
Depreciation and amortization	$ 309	$ 383	$ 976	$ 1,225

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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