Segment Information (Tables)

12 Months Ended

Dec. 31, 2012

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,	Chemicals and Logistics		Drilling Products			Artificial Lift		Corporate and Other			Total
2012
Net revenue from external customers	$	183,986	$	116,736		$	12,106	$	—		$	312,828
Gross margin	81,438		45,709			4,472		—			131,619
Income (loss) from operations	65,440		22,282			3,395		(32,496		)	58,621
Depreciation and amortization	1,765		9,115			206		497			11,583
Total assets	59,195		118,771			11,189		30,712			219,867
Capital expenditures	3,553		12,264			77		4,807			20,701
2011
Net revenue from external customers	$	140,836	$	102,470		$	15,479	$	—		$	258,785
Gross margin	56,115		43,607			6,098		—			105,820
Income (loss) from operations	43,549		23,035			4,296		(21,992		)	48,888
Depreciation and amortization	1,594		8,061			196		254			10,105
Total assets	54,958		113,130			10,815		53,109			232,012
Capital expenditures	2,231		6,025			182		1,546			9,984
2010
Net revenue from external customers	$	66,121	$	65,782		$	15,079	$	—		$	146,982
Gross margin	29,249		18,991			4,730		—			52,970
Income (loss) from operations	19,833		(9,738		)	3,070		(19,432		)	(6,267		)
Depreciation and amortization	1,671		11,445			219		433			13,768
Total assets	44,102		102,949			9,062		28,694			184,807
Capital expenditures	1,227		4,679			32		122			6,060

Revenue by geographic location

Revenue by country is based on the location where services are provided and products are sold. 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,
	2012		2011		2010
U.S.	$	272,945	$	222,304	$	127,285
Other countries	39,883		36,481		19,697
Total	$	312,828	$	258,785	$	146,982