XML 16 R1.htm IDEA: XBRL DOCUMENT

Cover - USD ($)	12 Months Ended
Cover - USD ($)	Sep. 30, 2025	Dec. 02, 2025	Mar. 31, 2025
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Sep. 30, 2025
Current Fiscal Year End Date	--09-30
Document Transition Report	false
Entity File Number	001-39213
Entity Registrant Name	OneWater Marine Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	83-4330138
Entity Address, Address Line One	6275 Lanier Islands Parkway
Entity Address, City or Town	Buford
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30518
City Area Code	678
Local Phone Number	541-6300
Title of 12(b) Security	Class A common stock, par value $0.01 per share
Trading Symbol	ONEW
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 183,705,342
Documents Incorporated by Reference	Portions of the registrant’s Definitive Proxy Statement relating to the 2026 Annual Meeting of Shareholders, to be filed within 120 days of the Registrant’s fiscal year ended September 30, 2025, are incorporated by reference into Part III of this Annual Report on Form 10-K.
Entity Central Index Key	0001772921
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Amendment Flag	false
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		16,527,533
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0