v3.22.4
Document and Entity Information - shares
 3 Months Ended
Dec. 31, 2022
Jan. 25, 2023
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Dec. 31, 2022  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q1  
Trading Symbol HZO  
Entity Registrant Name MARINEMAX, INC.  
Entity Central Index Key 0001057060  
Current Fiscal Year End Date --09-30  
Entity Filer Category Large Accelerated Filer  
Entity Current Reporting Status Yes  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Common Stock, Shares Outstanding   21,853,546
Security Exchange Name NYSE  
Title of 12(b) Security Common Stock, par value $.001 per share  
Entity Interactive Data Current Yes  
Entity Shell Company false  
Entity 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  
Document Quarterly Report true  
Document Transition Report false