Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Revenue from External Customers by Products and Services [Table Text Block]

SEGMENT BREAKDOWN BETWEEN SERVICES / PRODUCT SALES	For the Years Ended December 31,
	2014		2013		2012
Reservoir Description Services	$	495,658	$	493,402	$	472,426
Production Enhancement Services	220,177		209,770		161,679
Reservoir Management Services	65,037		62,256		59,790
Total Revenue - Services	$	780,872	$	765,428	$	693,895
Reservoir Description Product sales	$	23,316	$	28,849	$	23,103
Production Enhancement Product sales	247,400		242,645		242,113
Reservoir Management Product sales	33,634		36,586		21,969
Total Revenue - Product sales	$	304,350	$	308,080	$	287,185
Total Revenue	$	1,085,222	$	1,073,508	$	981,080

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

Results for these business segments are presented below. We use the same accounting policies to prepare our b

Results for these business segments are presented below. We use the same accounting policies to prepare our business segment results as are used to prepare our Consolidated Financial Statements. All interest and other non-operating income (expense) is attributable to Corporate & Other area and is not allocated to specific business segments. Summarized financial information concerning our segments is shown in the following table (in thousands):

	Reservoir Description		Production Enhancement		Reservoir Management		Corporate & Other (1)			Consolidated
December 31, 2014
Revenues from unaffiliated clients	$	518,974	$	467,577	$	98,671	$	—		$	1,085,222
Inter-segment revenues	10,387		2,459		366		(13,212		)	—
Segment operating income (loss)	143,624		165,204		37,220		483			346,531
Total assets (at end of period)	319,325		257,135		34,179		65,014			675,653
Capital expenditures	21,371		7,990		2,681		4,544			36,586
Depreciation and amortization	15,816		7,509		1,393		1,978			26,696
December 31, 2013
Revenues from unaffiliated clients	$	522,251	$	452,415	$	98,842	$	—		$	1,073,508
Inter-segment revenue	3,432		3,140		1,742		(8,314		)	—
Segment operating income (loss)	146,338		154,715		31,555		811			333,419
Total assets (at end of period)	321,106		255,764		37,660		46,480			661,010
Capital expenditures	22,601		7,124		1,366		4,325			35,416
Depreciation and amortization	14,898		7,745		945		1,883			25,471

December 31, 2012
Revenue from unaffiliated clients	$	495,529	$	403,792	$	81,759	$	—		$	981,080
Inter-segment revenue	2,484		2,757		1,492		(6,733		)	—
Segment operating income (loss)	144,502		128,602		26,428		(2,252		)	297,280
Total assets (at end of period)	293,974		242,254		34,532		65,756			636,516
Capital expenditures	16,987		7,423		920		5,821			31,151
Depreciation and amortization	14,094		6,139		731		1,953			22,917
(1) "Corporate and other" represents those items that are not directly relating to a particular segment and eliminations.

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

The following table shows a summary of our U.S. and non-U.S. operations (with 2013 and 2012 revenue reclassified as described above) for December 31, 2014, 2013 and 2012 (in thousands):

GEOGRAPHIC INFORMATION	United States		Canada		Other Countries (1) (2)		Consolidated
December 31, 2014
Revenue	$	515,643	$	105,244	$	464,335	$	1,085,222
Property, plant and equipment, net	83,748		16,057		49,209		149,014
December 31, 2013
Revenue	$	487,252	$	107,842	$	478,414	$	1,073,508
Property, plant and equipment, net	73,870		17,195		47,759		138,824
December 31, 2012
Revenue	$	454,617	$	95,327	$	431,136	$	981,080
Property, plant and equipment, net	66,092		17,263		42,063		125,418
(1) Revenue earned in other countries, including The Netherlands, was not individually greater than 10% of our consolidated revenue in 2014, 2013 or 2012.
(2) Property, plant and equipment, net in other countries, including The Netherlands, were not individually greater than 10% of our consolidated fixed assets in 2014, 2013 or 2012.