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Subsequent Events (Details)		1 Months Ended	6 Months Ended
	Jul. 01, 2021 USD ($)	Jul. 30, 2021 USD ($) CompressorUnit	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)
Subsequent Events
Gain on sale			$ 5,995,000	$ 3,172,000
Subsequent Event
Subsequent Events
Notional value dedesignated	$ 125,000,000.0
Subsequent Event | Disposed of by Sale | July 2021 Disposition
Subsequent Events
Number of compressors | CompressorUnit		575
Compressor units horsepower (horsepower)		100,000
Consideration received		$ 61,000,000.0
Gain on sale		$ 13,500,000

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- Definition

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+ References

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- Definition

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+ References

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- Definition

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+ References

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

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- Definition

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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