| Document And Entity Information | Oct. 26, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 26, 2023 |
| Entity Registrant Name | MarineMax, Inc. |
| Entity Central Index Key | 0001057060 |
| Entity Emerging Growth Company | false |
| Securities Act File Number | 1-14173 |
| Entity Incorporation, State or Country Code | FL |
| Entity Tax Identification Number | 59-3496957 |
| Entity Address, Address Line One | 2600 McCormick Drive |
| Entity Address, Address Line Two | Suite 200 |
| Entity Address, City or Town | Clearwater |
| Entity Address, State or Province | FL |
| Entity Address, Postal Zip Code | 33759 |
| City Area Code | 727 |
| Local Phone Number | 531-1700 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $.001 per share |
| Trading Symbol | HZO |
| Security Exchange Name | NYSE |
