Business Segment, Geographic and Major Customer Information (Tables)

6 Months Ended

Jun. 30, 2013

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,	Chemical Technologies		Non-energy Chemical Technologies		Drilling Technologies		Artificial Lift Technologies		Corporate and Other			Total
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
2012
Net revenue from external customers	$	45,992	$	—	$	29,801	$	2,510	$	—		$	78,303
Gross margin	20,217		—		12,005		837		(34		)	33,025
Income (loss) from operations	16,350		—		6,444		385		(7,590		)	15,589
Depreciation and amortization	458		—		2,302		51		42			2,853
Total assets	54,769		—		119,050		9,298		18,561			201,678
Capital expenditures	913		—		2,946		55		1,445			5,359

As of and for the six months ended June 30,	Chemical Technologies		Non-energy Chemical Technologies		Drilling Technologies		Artificial Lift Technologies		Corporate and Other			Total
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
2012
Net revenue from external customers	$	93,639	$	—	$	58,790	$	5,069	$	—		$	157,498
Gross margin	41,132		—		23,515		1,884		(55		)	66,476
Income (loss) from operations	33,472		—		11,994		901		(14,030		)	32,337
Depreciation and amortization	862		—		4,461		95		83			5,501
Total assets	54,769		—		119,050		9,298		18,561			201,678
Capital expenditures	2,163		—		5,340		68		1,907			9,478

Revenue by geographic location

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

	Three months ended June 30,				Six months ended June 30,
	2013		2012		2013		2012
U.S.	$	83,488	$	69,912	$	149,510	$	137,883
Other countries	10,098		8,391		22,319		19,615
Total	$	93,586	$	78,303	$	171,829	$	157,498

Summary of revenue from major customers

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

	Three months ended June 30,				Six months ended June 30,
	2013		2012		2013		2012
Customer A	16.9	%	13.1	%	17.2	%	14.5	%
Customer B	*		10.6	%	*		10.8	%
Customer C	*		10.6	%	*		*
* This customer did not account for more than 10% of revenue.