Description of Company and Basis of Presentation (Details)	3 Months Ended
	Dec. 31, 2021 State Center Brand Location	Dec. 31, 2020
Description of the Business [Abstract]
Number of retail locations operating | Location	75
Number of distribution centers | Center	8
Number of states in which business operating | State	15
Number of top brands | Brand	10
Principles of Consolidation [Abstract]
Economic interest of quality assets and operations	80.00%
OneWater LLC [Member]
Principles of Consolidation [Abstract]
Ownership interest in subsidiaries	90.60%
Sales Revenue [Member] | Product Concentration Risk [Member] | Top Ten Brands [Member]
Description of the Business [Abstract]
Concentration risk percentage	34.50%	41.20%
Sales Revenue [Member] | Product Concentration Risk [Member] | Malibu Boats, Inc [Member]
Description of the Business [Abstract]
Concentration risk percentage	14.10%	13.70%