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Subsequent Event - Additional Information (Details) - CarStory - Subsequent Event
$ in Millions
Jan. 07, 2021
USD ($)
shares
Subsequent Event [Line Items]  
Aggregate purchase price $ 120.0
Business acquisition, cash payment $ 77.5
Common Stock  
Subsequent Event [Line Items]  
Business acquisition, number of shares issued | shares 1,072,117
Vast Holdings, Inc.  
Subsequent Event [Line Items]  
Percentage of business acquisition rate 100.00%