Schedule of Financial Information for Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Jun. 30, 2018
Segment Reporting Information [Line Items]
Revenue from external customers	$ 43,505	$ 53,819	$ 134,062	$ 134,062	$ 161,175	$ 161,175
(Loss) income before income taxes	(30,466)	(16,907)	(66,665)		(53,985)
Depreciation and amortization	8,054	8,683	23,564		26,652
Oilfield and Industrial Technologies and Services
Segment Reporting Information [Line Items]
Revenue from external customers	37,274	44,595		$ 113,274		$ 136,850
Operating Segment \| Oilfield and Industrial Technologies and Services
Segment Reporting Information [Line Items]
Revenue from external customers	37,274	44,595	113,274		136,850
(Loss) income before income taxes	(30,545)	(17,904)	(67,314)		(56,217)
Depreciation and amortization	7,782	8,372	22,747		25,755
Operating Segment \| Environmental Technologies and Services
Segment Reporting Information [Line Items]
Revenue from external customers	6,231	9,224	20,788		24,325
(Loss) income before income taxes	79	997	649		2,232
Depreciation and amortization	$ 272	$ 311	$ 817		$ 897

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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