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Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2017
Jun. 30, 2017
Goodwill [Line Items]    
Gross Carrying Amount $ 116,413 $ 57,438
Accumulated Amortization (49,172) (47,841)
Other intangible assets, net 67,241 9,597
Total definite-lived intangible assets, net 98,241 9,597
Indefinite-Lived Trade Names 31,000 0
Reacquired franchise rights    
Goodwill [Line Items]    
Gross Carrying Amount $ 1,410 1,383
Estimated Useful Life (in years) 5 years  
Weighted Average Remaining Useful Life (in years) 1 year 12 months 22 days  
Dealer relationships    
Goodwill [Line Items]    
Gross Carrying Amount $ 86,197 29,852
Weighted Average Remaining Useful Life (in years) 19 years 6 months 3 days  
Patent    
Goodwill [Line Items]    
Gross Carrying Amount $ 3,986 1,386
Weighted Average Remaining Useful Life (in years) 14 years 3 months 20 days  
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) 3 years 11 months 10 days  
Non-compete agreement    
Goodwill [Line Items]    
Gross Carrying Amount $ 55 54
Estimated Useful Life (in years) 10 years  
Weighted Average Remaining Useful Life (in years) 7 years 23 days  
Backlog    
Goodwill [Line Items]    
Gross Carrying Amount $ 98 $ 96
Estimated Useful Life (in years) 3 months 22 days  
Weighted Average Remaining Useful Life (in years) 1 day  
Minimum | Dealer relationships    
Goodwill [Line Items]    
Estimated Useful Life (in years) 8 years  
Minimum | Patent    
Goodwill [Line Items]    
Estimated Useful Life (in years) 12 years  
Maximum | Dealer relationships    
Goodwill [Line Items]    
Estimated Useful Life (in years) 15 years  
Maximum | Patent    
Goodwill [Line Items]    
Estimated Useful Life (in years) 15 years