Business Segment, Geographic and Major Customer Information (Tables)

12 Months Ended

Dec. 31, 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 year ended December 31,	Energy Chemistry Technologies		Consumer and Industrial Chemistry Technologies		Drilling Technologies			Production Technologies			Corporate and Other			Total
2015
Net revenue from external customers	$	213,593	$	56,374	$	52,112		$	12,280		$	—		$	334,359
Gross margin	81,936		14,371		16,702			2,101			—			115,110
Income (loss) from operations	43,902		8,742		(27,340		)	(4,111		)	(40,366		)	(19,173		)
Depreciation and amortization	4,791		2,202		8,539			750			1,742			18,024
Total assets	153,447		93,038		108,354			27,979			20,272			403,090
Capital expenditures	12,803		568		2,865			1,212			3,020			20,468
2014
Net revenue from external customers	$	268,761	$	51,091	$	113,302		$	16,003		$	—		$	449,157
Gross margin	117,867		12,897		45,651			6,544			—			182,959
Income (loss) from operations	84,846		6,558		19,022			3,246			(32,784		)	80,888
Depreciation and amortization	4,401		2,138		9,808			327			1,174			17,848
Total assets	156,596		87,412		147,584			21,843			9,841			423,276
Capital expenditures	6,983		115		9,626			942			2,241			19,907
2013
Net revenue from external customers	$	200,932	$	42,927	$	112,406		$	14,800		$	—		$	371,065
Gross margin	88,536		10,659		43,156			5,176			—			147,527
Income (loss) from operations	65,396		6,260		18,306			3,060			(34,296		)	58,726
Depreciation and amortization	3,160		1,126		9,632			250			941			15,109
Total assets	127,119		86,640		135,738			16,647			9,437			375,581
Capital expenditures	5,225		183		6,326			1,749			1,524			15,007

Revenue by geographic location

Revenue by country is based on the location where services are provided and products are used. No individual country other than the United States (“U.S.”) accounted for more than 10% of revenue. Revenue by geographic location is as follows (in thousands):

	Year ended December 31,
	2015		2014		2013
U.S.	$	273,624	$	370,087	$	319,649
Other countries	60,735		79,070		51,416
Total	$	334,359	$	449,157	$	371,065

Revenue by major customers

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

	Year ended December 31,
	2015	2014	2013
Customer A	13.9%	*	*
Customer B	12.0%	16.1%	16.2%

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