Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.20.4
Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Contingencies And Commitments [Line Items]    
Maximum exposure associated with general indemnifications $ 25.0  
Contingent liability reserve balance after reduction 4.3  
Other accrued liabilities    
Contingencies And Commitments [Line Items]    
Amount reserved for pending proceedings 0.3 $ 1.2
Other long-term liabilities    
Contingencies And Commitments [Line Items]    
Amount reserved for pending proceedings $ 0.2 $ 0.3
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