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Revenue Recognition - Summary of Maintenance, Repair, Storage, Rental, Charter Services and Parts and Accessories Revenue for Retail Operations by Location Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 527,274	$ 507,927
Retail Operations [Member] | Maintenance, Repair, Storage, Rental, Charter Services, Parts and Accessories Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue	98,004	91,937
Retail Operations [Member] | Maintenance, Repair, Storage, Rental, Charter Services, Parts and Accessories Revenue [Member] | Marina/Storage Locations [Member]
Disaggregation of Revenue [Line Items]
Revenue	69,590	65,799
Retail Operations [Member] | Maintenance, Repair, Storage, Rental, Charter Services, Parts and Accessories Revenue [Member] | Locations Without Marina/Storage [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 28,414	$ 26,138

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