Business Segment, Geographic and Major Customer Information (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Summary of financial information regarding reportable segments

Summarized financial information of the reportable segments is as follows (in thousands):

For the three months ended March 31,	Energy Chemistry Technologies			Corporate and Other			Total
2019
Net revenue from external customers	$	43,256		$	—		$	43,256
Income (loss) from operations	(5,334		)	(8,932		)	(14,266		)
Depreciation and amortization	1,785			475			2,260
Capital expenditures	461			—			461
2018
Net revenue from external customers	$	41,069		$	—		$	41,069
Income (loss) from operations	(166		)	(9,057		)	(9,223		)
Depreciation and amortization	1,769			564			2,333
Capital expenditures	1,011			366			1,377

Assets of the Company by reportable segments are as follows (in thousands):

	March 31, 2019		December 31, 2018
Energy Chemistry Technologies	$	157,636	$	139,205
Corporate and Other	125,156		28,208
Total segments	282,792		167,413
Held for sale	—		118,470
Total assets	$	282,792	$	285,883

Schedule of revenue by geographic location

Revenue by geographic location is as follows (in thousands):

	Three months ended March 31,
	2019		2018
U.S.	$	38,875	$	36,710
Other countries	4,381		4,359
Total	$	43,256	$	41,069

Schedule of revenue by major customer

Revenue from major customers, as a percentage of consolidated revenue, is as follows:

	Three months ended March 31,
	2019		2018
Customer A	19.0	%	*
Customer B	12.6	%	*
Customer C	*		10.7	%

* This customer did not account for more than 10% of revenue.