Disaggregated Revenue (Tables)

12 Months Ended

Dec. 31, 2019

Disaggregation Of Revenue [Abstract]

Schedule of Disaggregates Revenue by Product Line

The following table disaggregates revenue by product line for the years ended December 31:

	2019		2018
Technology products and services	$	31,508	$	50,917
Industrial products and services		15,389		14,873
Base ceramic and sand proppants		84,484		112,819
Sublease and rental income		4,174		—
Oilfield and Industrial Technologies and Services segment		135,555		178,609
Environmental Technologies and Services segment		26,152		32,136
	$	161,707	$	210,745