Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2015

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

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

	Reservoir Description		Production Enhancement		Reservoir Management		Corporate & Other 1			Consolidated
Three Months Ended June 30, 2015
Revenue from unaffiliated clients	$	118,911	$	70,589	$	14,389	$	—		$	203,889
Inter-segment revenue	2,411		652		58		(3,121		)	—
Segment operating income (loss)	30,944		14,376		3,452		(879		)	47,893
Total assets (at end of period)	330,417		229,899		26,048		72,621			658,985
Capital expenditures	4,297		709		45		390			5,441
Depreciation and amortization	4,232		1,649		422		627			6,930
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
Six Months Ended June 30, 2015
Revenue from unaffiliated clients	$	240,670	$	145,734	$	31,128	$	—		$	417,532
Inter-segment revenue	5,187		1,369		207		(6,763		)	—
Segment operating income (loss)	59,474		24,299		7,318		(481		)	90,610
Total assets	330,417		229,899		26,048		72,621			658,985
Capital expenditures	8,734		2,512		266		798			12,310
Depreciation and amortization	8,015		3,410		853		1,218			13,496
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