Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

v3.21.1
Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]      
Percentage of dealership that is accounted for under the equity method 50.00%    
Effective tax rate from continuing operations 26.00% 18.20%  
Tax expense for uncertain tax positions   $ 100  
Discrete benefit related to vested or exercised stock compensation $ 1,500 500  
Income benefit (18,864) 44,117  
Impairment charges $ 0 268,000  
Goodwill, Impairment Loss   268,000  
Income Tax Benefit Goodwill Impairment   $ 51,300  
Dealership      
Schedule of Equity Method Investments [Line Items]      
Percentage of dealership that is accounted for under the equity method 50.00%    
ASU 2014-09 | Finance, insurance and other, net      
Schedule of Equity Method Investments [Line Items]      
Contract assets $ 14,500   $ 21,700