Goodwill and Intangible Assets - Additional Information (Details) - USD ($)		12 Months Ended
	Mar. 04, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Total consideration of the transaction	$ 14,900,000
Cash paid at acquisition	7,000,000.0
Goodwill acquired	9,500,000
Intangible assets acquired	$ 5,300,000
Goodwill		$ 65,976,000	$ 64,160,000
Motorcycles
Goodwill [Line Items]
Goodwill acquired		0	9,520,000	$ 0
Goodwill		65,976,000	64,160,000	$ 55,048,000	$ 55,947,000
Financial Services
Goodwill [Line Items]
Goodwill		$ 0	$ 0
Minimum
Goodwill [Line Items]
Estimated useful lives		5 years
Maximum
Goodwill [Line Items]
Estimated useful lives		20 years