Redeemable Preferred Interest in Subsidiary (Details) - USD ($) $ in Thousands		8 Months Ended	12 Months Ended
	Feb. 11, 2020	Sep. 30, 2020	Sep. 30, 2020	Sep. 30, 2016
Redeemable Preferred Interest in Subsidiary [Abstract]
Amount of cash to fully redeem the preferred interest		$ 0
One Water Assets & Operations [Member]
Redeemable Preferred Interest in Subsidiary [Abstract]
Units outstanding (in shares)				100,000
Preferred units outstanding (in shares)				68,000
Preferred interest rate of return			10.00%
Preferred interest redemption period			5 years
Amount of cash to fully redeem the preferred interest	$ 89,200