Leases (Narrative) (Details) $ in Millions	1 Months Ended	9 Months Ended
	May 31, 2021 USD ($)	Sep. 30, 2021 rig
Leases [Abstract]
Number of compressors under finance lease agreement | rig		20
Finance lease term		7 years
Finance lease fair market value percentage for purchase		10.00%
Discount rate finance leases		4.00%
Purchase of leased assets | $	$ 3.0