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Commitments and Contingencies (Details) - USD ($)
Feb. 28, 2017
Sep. 30, 2020
Jan. 02, 2020
Dec. 31, 2019
Business Acquisition [Line Items]        
Loss contingency accrual   $ 0   $ 0
Walmart Program Agreement        
Business Acquisition [Line Items]        
Capital contributions, authorized amount     $ 35,000,000.0  
UniRush, LLC        
Business Acquisition [Line Items]        
Contingent consideration, earn-out payable $ 20,000,000      
Contingent consideration, earn-out period 5 years