v3.22.4
Company Background - Additional Information (Detail)
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2022
Location
Dec. 31, 2022
RetailDealership
Oct. 31, 2022
Marina
Concentration Risk [Line Items]            
Number of retail locations       125 78 57
Product Concentration Risk [Member] | Brunswick [Member] | Sales [Member]            
Concentration Risk [Line Items]            
Revenue percentage from sale of boats 23.00%          
Product Concentration Risk [Member] | Brunswick Sea Ray Boat [Member] | Brunswick [Member] | Sales [Member]            
Concentration Risk [Line Items]            
Revenue percentage from sale of boats 11.00%          
Product Concentration Risk [Member] | Brunswick Boston Whaler Boats [Member] | Brunswick [Member] | Sales [Member]            
Concentration Risk [Line Items]            
Revenue percentage from sale of boats 9.00%          
Product Concentration Risk [Member] | Azimut Benetti Groups and Yachts | Sales [Member]            
Concentration Risk [Line Items]            
Revenue percentage from sale of boats 8.00%          
Geographic Concentration Risk [Member] | Sales [Member] | Florida [Member]            
Concentration Risk [Line Items]            
Revenue percentage from sale of boats 51.00% 50.00% 54.00%