Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.10.0.1
Commitments and Contingencies - Additional Information (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
USD ($)
Option
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Contingencies And Commitments [Line Items]      
Lease exit expense $ 1,700    
Interest Expense 500    
Lease exit accrued cost $ 1,200    
Operating lease term for dealership facilities, minimum 15 years    
Operating lease term for dealership facilities, maximum 20 years    
Operating lease number of renewal options, minimum | Option 1    
Operating lease number of renewal options, maximum | Option 2    
Operating lease period of renewal options, minimum 5 years    
Operating lease period of renewal options, maximum 10 years    
Percentage of lease facility based on capitalization rates 10.00%    
Lease expense for continuing operation $ 89,200 $ 100,600 $ 94,600
Lease expense from discontinuing operation net of lease exit accrual adjustments 600 1,300 900
Leases, net contingent rent benefit related to decrease in interest rates from continuing operation 1,600 1,700 1,800
Leases net contingent rent benefit related to decrease in interest rates from discontinuing operation 100 100 $ 100
Obligations under subleases, if subleases do not perform 59,800    
Maximum exposure associated with general indemnifications 13,200    
Contingent liability reserve balance after reduction 4,300    
Maximum aggregate earnout payment 80,000    
Earnout accrual 23,300    
Earnout accrual recorded in other accrued liabilities 7,700    
Earnout accrual recorded in other long-term liabilities 15,600    
Other accrued liabilities      
Contingencies And Commitments [Line Items]      
Amount reserved for pending proceedings $ 2,400 $ 3,200  
Dealership      
Contingencies And Commitments [Line Items]      
Joint venture ownership percentage 50.00%    
Minimum      
Contingencies And Commitments [Line Items]      
General indemnifications expiration period 1 year    
Maximum      
Contingencies And Commitments [Line Items]      
General indemnifications expiration period 3 years