Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2014

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

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 June 30, 2014
Revenue from unaffiliated clients	$	130,589	$	110,993	$	25,980	$	—		$	267,562
Inter-segment revenue	2,763		384		347		(3,494		)	—
Segment operating income (loss)	36,341		37,660		9,794		339			84,134
Total assets (at end of period)	318,370		264,784		39,795		66,179			689,128
Capital expenditures	6,280		1,755		282		3,802			12,119
Depreciation and amortization	3,935		1,880		366		137			6,318
Three Months Ended June 30, 2013
Revenue from unaffiliated clients	$	129,222	$	110,199	$	23,718	$	—		$	263,139
Inter-segment revenue	1,090		740		400		(2,230		)	—
Segment operating income (loss)	36,918		37,239		7,475		237			81,869
Total assets (at end of period)	299,399		255,987		35,570		64,160			655,116
Capital expenditures	6,424		1,851		517		700			9,492
Depreciation and amortization	3,599		1,797		189		379			5,964
Six Months Ended June 30, 2014
Revenue from unaffiliated clients	$	255,845	$	221,273	$	53,347	$	—		$	530,465
Inter-segment revenue	5,532		1,181		767		(7,480		)	—
Segment operating income (loss)	71,194		74,862		20,268		637			166,961
Total assets	318,370		264,784		39,795		66,179			689,128
Capital expenditures	11,096		2,830		367		5,494			19,787
Depreciation and amortization	7,783		3,775		605		788			12,951
Six Months Ended June 30, 2013
Revenue from unaffiliated clients	$	254,467	$	217,630	$	51,969	$	—		$	524,066
Inter-segment revenue	1,475		1,677		823		(3,975		)	—
Segment operating income (loss)	71,769		71,477		17,321		339			160,906
Total assets	299,399		255,987		35,570		64,160			655,116
Capital expenditures	11,853		3,939		1,036		1,107			17,935
Depreciation and amortization	7,224		3,614		380		771			11,989