Acquisitions and Dispositions (Details 1) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Aug. 04, 2014
Business Acquisition [Line Items]
Purchase price allocation, nondeductible goodwill		$ 292,157		$ 293,866
Revenues from acquired entitiy			$ 61,000
Interim financing costs		0	(9,869)
Transaction costs	$ 2,100		3,000
Accumulated amortization		48,951		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
Depreciation and amortization from acquired entity			9,600
Pretax earnings from acquired entity			6,400
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
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		20 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