Redeemable Preferred Interest in Subsidiary (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
	Feb. 11, 2020	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2021	Sep. 30, 2016
Redeemable Preferred Interest in Subsidiary [Abstract]
Amount of cash to fully redeem the preferred interest		$ 0	$ 0	$ 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