Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Selected Quarterly Financial Data (Unaudited)

Summary of quarterly financial data

In management’s opinion, the summarized quarterly financial data below (in thousands, except per unit amounts) contains all appropriate adjustments, all of which are normally recurring adjustments, considered necessary to present fairly our financial position and the results of operations for the respective periods.

	March 31,2012(1)		June 30, 2012(2)			September 302012		December 31, 2012
Revenue	$	88,697	$	97,171		$	99,324	$	102,301
Gross profit(4)	24,020		1,541			29,469		34,228
Net income (loss)	4,505		(19,050		)	10,380		14,674
Income (loss) per common unit — basic	$	0.09	$	(0.47	)	$	0.21	$	0.31
Income (loss) per common unit — diluted	0.09		(0.47		)	0.21		0.31

	March 31,2011			June 30, 2011(3)			September 302011		December 31, 2011
Revenue	$	68,729		$	71,841		$	84,437	$	83,267
Gross profit(4)	17,927			16,696			22,215		21,570
Net income (loss)	223			(1,938		)	3,253		4,515
Income (loss) per common and subordinated unit — basic	$	(0.01	)	$	(0.08	)	$	0.06	$	0.10
Income (loss) per common and subordinated unit — diluted	(0.01		)	(0.08		)	0.06		0.10

(1) During the first quarter of 2012, we completed the March 2012 Contract Operations Acquisition from Exterran Holdings (see Note 2).

(2) During the second quarter of 2012, we recorded a long-lived asset impairment charge of $28.1 million.

(3) During the second quarter of 2011, we completed the June 2011 Contract Operations Acquisition from Exterran Holdings (see Note 2).

(4) Gross profit is defined as revenue less cost of sales and direct depreciation and amortization expense and long-lived asset impairment charges.