Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Jun. 30, 2020
Goodwill [Line Items]
Gross Carrying Amount	$ 140,080	$ 139,994
Less: Accumulated amortization	(65,159)	(63,602)
Total definite-lived intangible assets, net	74,921	76,392
Total other intangible assets, net	138,421	139,892
Trade name
Goodwill [Line Items]
Trade name	63,500	63,500
Dealer relationships
Goodwill [Line Items]
Gross Carrying Amount	$ 111,377	111,293
Weighted Average Remaining Useful Life (in years)	17 years
Dealer relationships | Minimum
Goodwill [Line Items]
Estimated Useful Life (in years)	8 years
Dealer relationships | Maximum
Goodwill [Line Items]
Estimated Useful Life (in years)	20 years
Patent
Goodwill [Line Items]
Gross Carrying Amount	$ 3,986	3,986
Weighted Average Remaining Useful Life (in years)	11 years 9 months 18 days
Patent | Minimum
Goodwill [Line Items]
Estimated Useful Life (in years)	12 years
Patent | Maximum
Goodwill [Line Items]
Estimated Useful Life (in years)	15 years
Trade name
Goodwill [Line Items]
Gross Carrying Amount	$ 24,667	24,667
Estimated Useful Life (in years)	15 years
Weighted Average Remaining Useful Life (in years)	1 year 2 months 12 days
Non-compete agreement
Goodwill [Line Items]
Gross Carrying Amount	$ 50	$ 48
Estimated Useful Life (in years)	10 years
Weighted Average Remaining Useful Life (in years)	4 years 1 month 6 days