Business Segment, Geographic and Major Customer Information (Tables)

6 Months Ended

Jun. 30, 2015

Segment Reporting [Abstract]

Financial information regarding reportable segments

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

As of and for the three months ended June 30,	Energy Chemistry Technologies		Consumer and Industrial Chemistry Technologies		Drilling Technologies			Production Technologies			Corporate and Other			Total
2015
Net revenue from external customers	$	56,472	$	15,477	$	12,334		$	2,747		$	—		$	87,030
Gross margin	20,426		4,126		4,103			597			—			29,252
Income (loss) from operations	11,892		2,683		(21,300		)	(1,596		)	(10,287		)	(18,608		)
Depreciation and amortization	1,174		549		2,218			198			471			4,610
Total assets	149,767		98,251		114,481			25,544			15,350			403,393
Capital expenditures	2,075		6		620			138			527			3,366
2014
Net revenue from external customers	$	62,589	$	12,607	$	27,241		$	2,881		$	—		$	105,318
Gross margin	27,432		2,893		10,762			1,223			—			42,310
Income (loss) from operations	19,162		972		4,200			421			(7,080		)	17,675
Depreciation and amortization	1,095		549		2,493			92			366			4,595
Total assets	140,028		97,935		139,095			15,922			15,241			408,221
Capital expenditures	1,418		17		2,025			50			747			4,257

As of and for the six months ended June 30,	Energy Chemistry Technologies		Consumer and Industrial Chemistry Technologies		Drilling Technologies			Production Technologies			Corporate and Other			Total
2015
Net revenue from external customers	$	103,115	$	28,940	$	31,028		$	6,321		$	—		$	169,404
Gross margin	36,526		7,833		10,094			1,326			—			55,779
Income (loss) from operations	18,713		5,064		(21,937		)	(2,135		)	(19,601		)	(19,896		)
Depreciation and amortization	2,378		1,102		4,537			323			841			9,181
Total assets	149,767		98,251		114,481			25,544			15,350			403,393
Capital expenditures	4,443		28		2,744			776			972			8,963
2014
Net revenue from external customers	$	124,966	$	25,638	$	52,142		$	5,147		$	—		$	207,893
Gross margin	56,650		6,927		20,550			1,863			—			85,990
Income (loss) from operations	40,785		3,307		7,517			343			(15,479		)	36,473
Depreciation and amortization	2,162		982		4,930			163			577			8,814
Total assets	140,028		97,935		139,095			15,922			15,241			408,221
Capital expenditures	2,804		30		5,321			110			980			9,245

Revenue by geographic location

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

	Three months ended June 30,				Six months ended June 30,
	2015		2014		2015		2014
U.S.	$	73,250	$	91,691	$	137,446	$	179,022
Other countries	13,780		13,627		31,958		28,871
Total	$	87,030	$	105,318	$	169,404	$	207,893

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,
	2015		2014		2015		2014
Customer A	19.5	%	*		15.8	%	*
Customer B	12.1	%	17.7	%	11.2	%	19.2	%