Disaggregated Revenue (Tables)

9 Months Ended

Sep. 30, 2018

Disaggregation Of Revenue [Abstract]

Schedule of Disaggregates Revenue by Product Line

The following table disaggregates our revenue by product line for the three and nine months ended September 30, 2018 and 2017:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Technology products and services	$	12,922	$	10,813	$	35,578	$	28,543
Industrial products and services		4,153		2,955		10,714		7,372
Base ceramic and sand proppants		27,520		31,079		90,558		75,754
Oilfield and Industrial technologies and services segment		44,595		44,847		136,850		111,669
Environmental technologies and services segment		9,224		5,326		24,325		16,746
	$	53,819	$	50,173	$	161,175	$	128,415