Restructuring and Impairment (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment	$ 1,898	$ 0
Restructuring and Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment	900
New Boat Cost of Sales
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment	1,000
Dealerships
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment	1,200
Distribution
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment	$ 700