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Period considered for ownership interest after the event of liquidation., in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Exercise price per share or per unit of warrants or rights outstanding.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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Members' Equity (Details) - OneWater LLC [Member] - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended
	Jun. 01, 2018	Aug. 01, 2017	Dec. 31, 2016	Oct. 28, 2016	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019	Sep. 30, 2016	Mar. 28, 2014
Classes of Membership Units [Abstract]
Units outstanding (in shares)					76,573	75,816			100,000
Equity interest percentage									100.00%
Members' Equity Additional Information [Abstract]
Warrant liability					$ 50,116		$ 50,887
Change in fair value of warrant liability					(771)	$ (4,695)
Bosun's Assets and Operations [Member]
Members' Equity Additional Information [Abstract]
Amount of investment of purchase price	$ 2,500
Ownership interest percentage.	25.00%
South Shore Assets and Operations [Member]
Members' Equity Additional Information [Abstract]
Amount of investment of purchase price		$ 1,800
Ownership interest percentage.		25.00%
Preferred Distribution [Member]
Members' Equity Additional Information [Abstract]
Percentage of accrue interest rate			5.00%
Ownership interest period			90 days
Unpaid balance					$ 3,200		3,200	$ 3,800
Preferred distribution cumulative interest accrual rate					5.00%
Unpaid amount of cumulative interest					$ 0		0
Investor Voting Warrants [Member]
Classes of Membership Units [Abstract]
Units outstanding (in shares)									25,000
Equity interest percentage									25.00%
Members' Equity Additional Information [Abstract]
Common unit warrants issued (in shares)				25,000
Common unit warrants in exchange price				$ 1,000
Common unit warrants term (in years)				10 years
Common units redemption term (in years)				5 years
Warrants exercise price per unit (in dollars per share)				$ 0.0001
Warrant liability					50,116		$ 50,887
Change in fair value of warrant liability					$ 771	$ 4,695
Common Voting Membership Interests (Class A) [Member]
Classes of Membership Units [Abstract]
Units outstanding (in shares)									73,140
Equity interest percentage									73.10%
Common Non-Voting Membership Interests (Class B) [Member]
Classes of Membership Units [Abstract]
Units outstanding (in shares)									1,860
Equity interest percentage									1.90%