Acquisitions and Dispositions (Details 1) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Aug. 04, 2014
Business Acquisition [Line Items]
Purchase price allocation, nondeductible goodwill	$ 293,278	$ 293,278	$ 293,866
Accumulated amortization	46,095	46,095	39,754
Compressor Systems, Inc. [Member]
Business Acquisition [Line Items]
Purchase price allocation, current assets				$ 101,411
Purchase price allocation, property, plant, and equipment				571,706
Purchase price allocation, intangible assets				68,000
Purchase price allocation, total assets acquired				902,504
Purchase price allocation, current liabilities				77,504
Purchase price allocation, total liabilities assumed				77,504
Purchase price allocation, net assets acquired				825,000
Purchase price allocation, deductible goodwill				161,387
Decrease in goodwill recorded during period		100
Revenues from acquired entitiy	96,300	167,500
Depreciation and amortization from acquired entity	16,500	32,400
Pretax earnings from acquired entity	6,700	13,600
Allocated interest expense excluded from results attributable to acquired entity	8,000	15,800
Deferred financing costs			16,600
Interim financing costs			$ 9,300
Value of trademarks/tradenames				33,700
Value of customer relationships				21,400
Value of other intangible assets				$ 12,900
Accumulated amortization	$ 9,700	$ 9,700
Building [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Acquired property, plant, and equipment, useful life		30 years
Building [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Acquired property, plant, and equipment, useful life		15 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Acquired property, plant, and equipment, useful life		16 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Acquired property, plant, and equipment, useful life		2 years
Vehicles [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Acquired property, plant, and equipment, useful life		4 years
Vehicles [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Acquired property, plant, and equipment, useful life		3 years
Finite-Lived Intangible Assets [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible asset, useful life		15 years
Finite-Lived Intangible Assets [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible asset, useful life		2 years
CSI Compressco [Member]
Business Acquisition [Line Items]
Effective date of acquisition			Aug. 04, 2014
Purchase price			$ 825,000