Schedule of Financial Information for Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Revenue from external customers	$ 57,989	$ 43,572	$ 107,356	$ 78,242
(Loss) income before income taxes	(14,805)	(25,321)	(37,077)	(57,477)
Depreciation and amortization	8,944	11,509	17,969	23,391
Oilfield and Industrial Technologies and Services
Segment Reporting Information [Line Items]
Revenue from external customers	49,788	37,202	92,256	66,823
Operating Segment \| Oilfield and Industrial Technologies and Services
Segment Reporting Information [Line Items]
Revenue from external customers	49,788	37,202	92,256	66,823
(Loss) income before income taxes	(15,545)	(25,436)	(38,312)	(57,199)
Depreciation and amortization	8,647	11,178	17,383	22,724
Operating Segment \| Environmental Technologies and Services
Segment Reporting Information [Line Items]
Revenue from external customers	8,201	6,370	15,100	11,419
(Loss) income before income taxes	740	115	1,235	(278)
Depreciation and amortization	$ 297	$ 331	$ 586	$ 667

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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