Business Segment, Geographic and Major Customer Information (Tables)

6 Months Ended

Jun. 30, 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 June 30,	Energy Chemistry Technologies			Corporate and Other			Total
2019
Net revenue from external customers	$	34,692		$	—		$	34,692
Income (loss) from operations	(7,651		)	(6,208		)	(13,859		)
Depreciation and amortization	1,933			186			2,119
Capital expenditures	306			—			306
2018
Net revenue from external customers	$	39,546		$	—		$	39,546
Income (loss) from operations	(37,929		)	(9,211		)	(47,140		)
Depreciation and amortization	1,797			546			2,343
Capital expenditures	1,167			87			1,254

For the six months ended June 30,	Energy Chemistry Technologies			Corporate and Other			Total
2019
Net revenue from external customers	$	77,949		$	—		$	77,949
Income (loss) from operations	(12,984		)	(15,138		)	(28,122		)
Depreciation and amortization	3,718			661			4,379
Capital expenditures	767			—			767
2018
Net revenue from external customers	$	80,615		$	—		$	80,615
Income (loss) from operations	(38,095		)	(18,269		)	(56,364		)
Depreciation and amortization	3,566			1,110			4,676
Capital expenditures	2,178			453			2,631

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

	June 30, 2019		December 31, 2018
Energy Chemistry Technologies	$	144,106	$	139,205
Corporate and Other	119,710		28,208
Total segments	263,816		167,413
Held for sale	—		118,470
Total assets	$	263,816	$	285,883

Schedule of revenue by geographic location

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

	Three months ended June 30,				Six months ended June 30,
	2019		2018		2019		2018
U.S.	$	31,114	$	36,176	$	69,990	$	72,886
Other countries	3,578		3,370		7,959		7,729
Total	$	34,692	$	39,546	$	77,949	$	80,615

Schedule of revenue by major customer

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

	Three months ended June 30,				Six months ended June 30,
	2019		2018		2019		2018
Customer A	17.6	%	*		15.4	%	*
Customer B	11.0	%	18.2	%	11.3	%	*
Customer C	*		*		10.7	%	*

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