Business Segment, Geographic and Major Customer Information (Tables)

6 Months Ended

Jun. 30, 2014

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 Chemical Technologies		Consumer and Industrial Chemical Technologies		Drilling Technologies		Production Technologies		Corporate and Other			Total
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
2013
Net revenue from external customers	$	47,709	$	12,675	$	29,785	$	3,417	$	—		$	93,586
Gross margin	20,586		3,693		12,455		860		—			37,594
Income (loss) from operations	14,729		2,347		5,782		330		(9,657		)	13,531
Depreciation and amortization	809		252		2,415		60		354			3,890
Total assets	119,137		104,201		118,722		13,296		27,754			383,110
Capital expenditures	1,933		35		2,141		70		557			4,736

As of and for the six months ended June 30,	Energy Chemical Technologies		Consumer and Industrial Chemical Technologies		Drilling Technologies		Production Technologies		Corporate and Other			Total
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
2013
Net revenue from external customers	$	92,359	$	12,675	$	58,699	$	8,096	$	—		$	171,829
Gross margin	39,699		3,693		23,801		3,031		—			70,224
Income (loss) from operations	29,053		2,347		11,201		1,943		(18,465		)	26,079
Depreciation and amortization	1,269		252		4,777		121		504			6,923
Total assets	119,137		104,201		118,722		13,296		27,754			383,110
Capital expenditures	2,958		35		3,002		1,067		2,057			9,119

Revenue by geographic location

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

	Three months ended June 30,				Six months ended June 30,
	2014		2013		2014		2013
U.S.	$	91,691	$	83,488	$	179,022	$	149,510
Other countries	13,627		10,098		28,871		22,319
Total	$	105,318	$	93,586	$	207,893	$	171,829