Schedule of Financial Information for Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Revenue from external customers	$ 47,458	$ 49,367
(Loss) income before income taxes	(19,994)	(22,272)
Depreciation and amortization	7,801	9,025
Oilfield and Industrial Technologies and Services
Segment Reporting Information [Line Items]
Revenue from external customers	40,087	42,467
Operating Segment \| Oilfield and Industrial Technologies and Services
Segment Reporting Information [Line Items]
Revenue from external customers	40,087	42,467
(Loss) income before income taxes	(20,266)	(22,767)
Depreciation and amortization	7,533	8,736
Operating Segment \| Environmental Technologies and Services
Segment Reporting Information [Line Items]
Revenue from external customers	7,371	6,900
(Loss) income before income taxes	272	495
Depreciation and amortization	$ 268	$ 289

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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