CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Revenues:
Total revenues	$ 442,293	$ 483,521	$ 822,854	$ 859,335
Cost of sales:
Total cost of sales	336,763	373,110	627,931	664,870
Selling, general and administrative expenses	85,661	87,791	167,011	166,851
Depreciation and amortization	4,174	5,518	8,584	10,833
Transaction costs	1,464	377	2,636	936
Change in fair value of contingent consideration	0	66	203	308
Restructuring and impairment	6,594	388	14,026	1,239
Income from operations	7,637	16,271	2,463	14,298
Other expense (income):
Interest expense – floor plan	6,611	7,504	13,767	14,530
Interest expense – other	7,345	9,100	15,981	18,088
Other expense (income), net	1,056	190	1,181	1,077
Total other expense, net	15,012	16,794	30,929	33,695
Net loss before income tax expense (benefit)	(7,375)	(523)	(28,466)	(19,397)
Income tax expense (benefit)	5,526	(148)	(7,854)	(5,410)
Net loss	(12,901)	(375)	(20,612)	(13,987)
Net loss attributable to non-controlling interests of One Water Marine Holdings, LLC	0	7	0	1,648
Net loss attributable to OneWater Marine Inc.	(12,901)	(368)	(20,612)	(12,339)
New boat
Revenues:
Total revenues	272,042	309,500	505,307	557,497
Cost of sales:
Total cost of sales	223,583	259,217	418,540	470,338
Pre-owned boat
Revenues:
Total revenues	94,367	89,728	164,782	146,526
Cost of sales:
Total cost of sales	76,650	73,877	132,463	119,459
Finance & insurance income
Revenues:
Total revenues	14,021	15,003	22,913	24,403
Service, parts & other
Revenues:
Total revenues	61,863	69,290	129,852	130,909
Cost of sales:
Total cost of sales	$ 36,530	$ 40,016	$ 76,928	$ 75,073
Class A Common Stock
Other expense (income):
Net loss per share of Class A common stock – basic (in usd per share)	$ (0.78)	$ (0.02)	$ (1.24)	$ (0.80)
Net loss per share of Class A common stock - diluted (in usd per share)	$ (0.78)	$ (0.02)	$ (1.24)	$ (0.80)
Basic weighted-average shares of Class A common stock outstanding (in shares)	16,614	15,968	16,574	15,393
Diluted weighted-average shares of Class A common stock outstanding (in shares)	16,614	15,968	16,574	15,393