Disaggregated Revenue

6 Months Ended

Jun. 30, 2018

Disaggregation Of Revenue [Abstract]

Disaggregated Revenue

8. Disaggregated Revenue

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

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Technology products and services	$	12,786	$	8,526	$	22,656	$	17,730
Industrial products and services		3,269		2,552		6,562		4,418
Base ceramic and sand proppants		33,733		26,124		63,038		44,675
Oilfield and Industrial technologies and services segment		49,788		37,202		92,256		66,823
Environmental technologies and services segment		8,201		6,370		15,100		11,419
	$	57,989	$	43,572	$	107,356	$	78,242