Disaggregated Revenue - Schedule of Disaggregates Revenue by Product Line (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation Of Revenue [Line Items]
Revenue by product line	$ 53,819	$ 50,173	$ 161,175	$ 128,415
Environmental Technologies and Services
Disaggregation Of Revenue [Line Items]
Revenue by product line	9,224	5,326	24,325	16,746
Oilfield and Industrial Technologies and Services
Disaggregation Of Revenue [Line Items]
Revenue by product line	44,595	44,847	136,850	111,669
Oilfield and Industrial Technologies and Services | Technology Products and Services
Disaggregation Of Revenue [Line Items]
Revenue by product line	12,922	10,813	35,578	28,543
Oilfield and Industrial Technologies and Services | Industrial Products and Services
Disaggregation Of Revenue [Line Items]
Revenue by product line	4,153	2,955	10,714	7,372
Oilfield and Industrial Technologies and Services | Base Ceramic and Sand Proppants
Disaggregation Of Revenue [Line Items]
Revenue by product line	$ 27,520	$ 31,079	$ 90,558	$ 75,754