CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Revenues
Total revenues		$ 189,963		$ 343,661
Cost of sales (exclusive of depreciation and amortization shown separately below)
Total cost of sales		145,379		266,888
Selling, general and administrative expenses		32,146		60,586
Depreciation and amortization		791		1,551	$ 1,192
Transaction costs		2,925		3,362
Gain on settlement of contingent consideration		0		0
Income from operations		8,722		11,274
Other expense (income)
Interest expense - floor plan		2,525		5,184
Interest expense - other		2,457		4,310
Change in fair value of warrant liability		0		(771)	7,600
Other expense (income), net		289		167
Total other expense net		5,271		8,890
Income (loss) before income tax expense		3,451		2,384
Income tax expense		472		472
Net income (loss)		2,979	$ (2,951)	1,912	(441)
Less: Net income (loss) attributable to non-controlling interest		(103)		(350)
Net income (loss)		$ 1,085		$ 1,085
Weighted Average Number of Shares Outstanding, Basic (in shares)		6,088		6,088
New Boat [Member]
Revenues
Total revenues		$ 127,913		$ 226,015
Cost of sales (exclusive of depreciation and amortization shown separately below)
Total cost of sales		103,788		185,389
Pre-Owned Boat [Member]
Revenues
Total revenues		42,992		80,813
Cost of sales (exclusive of depreciation and amortization shown separately below)
Total cost of sales		35,809		68,029
Finance & Insurance [Member]
Revenues
Total revenues		8,083		12,408
Service, Parts & Other [Member]
Revenues
Total revenues		10,975		24,425
Cost of sales (exclusive of depreciation and amortization shown separately below)
Total cost of sales		$ 5,782		$ 13,470
Class A Common Stock [Member]
Other expense (income)
Earnings per share, Basic (in dollars per share)	[1]	$ 0.18		$ 0.18
Earnings per share, Diluted (in dollars per share)	[1]	$ 0.18		$ 0.18
Weighted Average Number of Shares Outstanding, Basic (in shares)	[1]	6,088		6,088
Weighted Average Number of Shares Outstanding, Diluted (in shares)	[1]	6,088		6,088
OneWater LLC [Member]
Revenues
Total revenues			180,771		284,049
Cost of sales (exclusive of depreciation and amortization shown separately below)
Total cost of sales			141,046		221,005
Selling, general and administrative expenses			27,548		49,177
Depreciation and amortization			585		1,192
Transaction costs			444		742
Gain on settlement of contingent consideration			(1,655)		(1,655)
Income from operations			12,803		13,588
Other expense (income)
Interest expense - floor plan			2,210		3,997
Interest expense - other			1,294		2,522
Change in fair value of warrant liability			12,295		7,600
Other expense (income), net			(45)		(90)
Total other expense net			15,754		14,029
Income (loss) before income tax expense			(2,951)		(441)
Income tax expense			0		0
Net income (loss)			(2,951)		(441)
Less: Net income (loss) attributable to non-controlling interest		$ (1,791)	(270)	$ (477)	(546)
Net income (loss)			(3,221)		(987)
OneWater LLC [Member] | New Boat [Member]
Revenues
Total revenues			126,928		194,492
Cost of sales (exclusive of depreciation and amortization shown separately below)
Total cost of sales			104,780		160,102
OneWater LLC [Member] | Pre-Owned Boat [Member]
Revenues
Total revenues			36,015		55,929
Cost of sales (exclusive of depreciation and amortization shown separately below)
Total cost of sales			29,838		46,719
OneWater LLC [Member] | Finance & Insurance [Member]
Revenues
Total revenues			6,354		8,518
OneWater LLC [Member] | Service, Parts & Other [Member]
Revenues
Total revenues			11,474		25,110
Cost of sales (exclusive of depreciation and amortization shown separately below)
Total cost of sales			$ 6,428		$ 14,184

[1] Represents earnings per share of Class A common stock and weighted-average shares of Class A common stock outstanding for the period from February 11, 2020 through March, 31, 2020, the period following the Organizational Transactions (as defined below) and OneWater Marine Inc.'s initial public offering. See Note 9.