Results of Operations by Business Segment and Geographic Area (Tables)

6 Months Ended

Jun. 30, 2012

Results of Operations by Business Segment and Geographic Area [Abstract]

Financial information regarding reportable segments

Summarized financial information regarding reportable segments includes (in thousands):

For the Three Months Ended June 30,	Chemicals		Drilling		Artificial Lift			Corporate			Total
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
2011
Net revenue from external customers	$	29,142	$	24,464	$	2,312		$	—		$	55,918
Gross margin		11,011		10,808		425			—			22,244
Income (loss) from operations		8,266		5,905		(32	)		(6,233	)		7,906
Depreciation and amortization		390		1,981		52			73			2,496
Total assets		58,261		108,468		8,889			18,065			193,683
Capital expenditures		111		2,136		—			169			2,416

For the Six Months Ended June 30,	Chemicals		Drilling		Artificial Lift		Corporate			Total
2012
Net revenue from external customers	$	93,639	$	58,790	$	5,069	$	—		$	157,498
Gross margin		41,132		23,515		1,884		(54	)		66,477
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
2011
Net revenue from external customers	$	56,068	$	47,105	$	5,650	$	—		$	108,823
Gross margin		22,312		19,753		1,324		—			43,389
Income (loss) from operations		16,791		10,602		394		(10,597	)		17,190
Depreciation and amortization		780		3,923		105		156			4,964
Total assets		58,261		108,468		8,889		18,065			193,683
Capital expenditures		161		2,955		11		530			3,657

Revenue by geographic location

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
U.S.	$	69,912	$	50,775	$	137,883	$	95,850
Other countries		8,391		5,143		19,615		12,973
Total	$	78,303	$	55,918	$	157,498	$	108,823