Quarterly report pursuant to Section 13 or 15(d)

Business Acquisitions and Dispositions - Additional Information (Details)

v3.21.2
Business Acquisitions and Dispositions - Additional Information (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2021
USD ($)
Business
retail_Units
Sep. 30, 2020
USD ($)
Business
Business Acquisition [Line Items]      
Number of franchises disposed   1 1
Net cash generated from disposition   $ 3,900,000  
Proceeds from sales of dealerships   $ 3,872,000 $ 8,806,000
Mid-line import franchise      
Business Acquisition [Line Items]      
Net cash generated from disposition     $ 8,800,000
EchoPark Segment [Member]      
Business Combinations [Abstract]      
Number of acquired franchises | Business   3  
Business Acquisition [Line Items]      
Number of acquired franchises | Business   3  
Stand-alone pre-owned vehicle business      
Business Acquisition [Line Items]      
Business acquisition, consideration amount $ 66,100,000    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory 26,400,000 $ 26,400,000  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment 1,700,000 1,700,000  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 13,200,000 $ 13,200,000  
Franchised [Member]      
Business Combinations [Abstract]      
Number of acquired franchises | Business   2  
Business Acquisition [Line Items]      
Number of acquired franchises | Business   2