Revenue and Segment Information - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Net Sales	$ 291,759	$ 271,829	$ 874,842	$ 818,949
Wholegoods
Disaggregation of Revenue [Line Items]
Net Sales	212,918	207,461	663,306	644,042
Parts
Disaggregation of Revenue [Line Items]
Net Sales	71,419	58,093	188,712	155,965
Other
Disaggregation of Revenue [Line Items]
Net Sales	$ 7,422	$ 6,275	$ 22,824	$ 18,942