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Document and Entity Information - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2024 | Nov. 12, 2024 | Mar. 31, 2024
Cover [Abstract] |  |  |
Document Type | 10-K |  |
Amendment Flag | false |  |
Document Period End Date | Sep. 30, 2024 |  |
Document Fiscal Year Focus | 2024 |  |
Document Fiscal Period Focus | FY |  |
Trading Symbol | HZO |  |
Entity Registrant Name | MarineMax, Inc. |  |
Entity Central Index Key | 0001057060 |  |
Current Fiscal Year End Date | --09-30 |  |
Entity Well-known Seasoned Issuer | Yes |  |
Entity Current Reporting Status | Yes |  |
Entity Voluntary Filers | No |  |
Entity Filer Category | Large Accelerated Filer |  |
Entity Small Business | false |  |
Entity Emerging Growth Company | false |  |
Entity Shell Company | false |  |
Security Exchange Name | NYSE |  |
Title of 12(b) Security | Common Stock, par value $.001 per share |  |
Entity Interactive Data Current | Yes |  |
Entity File Number | 1-14173 |  |
Entity Incorporation, State or Country Code | FL |  |
Entity Tax Identification Number | 59-3496957 |  |
Entity Address, Address Line One | 501 Brooker Creek Boulevard |  |
Entity Address, City or Town | Oldsmar |  |
Entity Address, State or Province | FL |  |
Entity Address, Postal Zip Code | 34677 |  |
City Area Code | 727 |  |
Local Phone Number | 531-1700 |  |
Document Annual Report | true |  |
Document Transition Report | false |  |
ICFR Auditor Attestation Flag | true |  |
Document Financial Statement Error Correction [Flag] | false |  |
Entity Common Stock, Shares Outstanding |  | 22,594,565 |
Entity Public Float |  |  | $ 713,156,064
Documents Incorporated by Reference | Documents Incorporated by Reference Portions of the registrant’s definitive proxy statement for the 2025 Annual Meeting of Shareholders are incorporated by reference into Part III of this report. |  |
Auditor Name | KPMG LLP |  |
Auditor Firm ID | 185 |  |
Auditor Location | Tampa, Florida |  |

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