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Retirement of Long-Lived Assets (Details)	3 Months Ended	6 Months Ended
	Mar. 31, 2016 USD ($) rental_compressor hp	Jun. 30, 2015 USD ($)
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Amount of horsepower | hp	32,259
Loss on retirement	$ 0
Rental Compressor Unit
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Number of rental compressors that are not of type, configuration, make or model | rental_compressor	258
Estimated fair value of long-lived assets	$ 967,000
Rental Compressor Unit | Loss on Retirement of Rental Equipment
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Loss on retirement		$ 4,400,000

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- Definition

Aggregate Amount of Power Retired From Fleet

+ References

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- Definition

Number of Units Designated as Impaired Assets to be Disposed of by Method Other than Sale

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- Definition

Loss recognized as a result of the initial and subsequent write-down of a long-lived asset's carrying amount to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64862545&loc=d3e2921-110230

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- Definition

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- Definition

Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258

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