Segment Reporting Level 3 (Tables)

9 Months Ended

Sep. 30, 2011

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

Summarized financial information concerning our segments is shown in the following table (in thousands):

(Unaudited)	Reservoir Description		Production Enhancement		Reservoir Management		Corporate & Other 1			Consolidated
Three Months Ended September 30, 2011
Revenues from unaffiliated customers	$	119,853	$	97,407	$	14,084	$	—		$	231,344
Inter-segment revenues	446		232		377		(1,055		)	—
Segment operating income (loss)	28,780		30,728		3,502		554			63,564
Total assets	267,425		235,152		16,211		44,113			562,901
Capital expenditures	2,940		2,410		204		665			6,219
Depreciation and amortization	3,521		1,563		164		490			5,738
Three Months Ended September 30, 2010
Revenues from unaffiliated customers	$	106,485	$	78,992	$	13,744	$	—		$	199,221
Inter-segment revenues	441		390		319		(1,150		)	—
Segment operating income (loss)	28,014		26,260		5,535		408			60,217
Total assets	261,582		189,481		14,958		179,008			645,029
Capital expenditures	5,351		1,135		201		278			6,965
Depreciation and amortization	3,485		1,600		199		530			5,814
Nine Months Ended September 30, 2011
Revenues from unaffiliated customers	$	346,232	$	268,292	$	49,338	$	—		$	663,862
Inter-segment revenues	1,262		897		1,331		(3,490		)	—
Segment operating income (loss)	81,847		78,490		17,473		56			177,866
Total assets	267,425		235,152		16,211		44,113			562,901
Capital expenditures	10,322		5,713		595		1,573			18,203
Depreciation and amortization	10,520		4,780		513		1,561			17,374
Nine Months Ended September 30, 2010
Revenues from unaffiliated customers	$	317,106	$	227,553	$	41,801	$	—		$	586,460
Inter-segment revenues	989		1,103		1,034		(3,126		)	—
Segment operating income (loss)	78,229		73,355		14,827		(1,061		)	165,350
Total assets	261,582		189,481		14,958		179,008			645,029
Capital expenditures	15,280		2,527		458		1,396			19,661
Depreciation and amortization	10,515		4,849		523		1,447			17,334