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Software - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Acquired and Software for Internal Use        
Finite Lived Intangible Assets [Line Items]        
Amortization expense $ 0.2 $ 0.1 $ 0.6 $ 0.3
Acquired and Software for Internal Use | Minimum        
Finite Lived Intangible Assets [Line Items]        
Useful life     3 years  
Acquired and Software for Internal Use | Maximum        
Finite Lived Intangible Assets [Line Items]        
Useful life     7 years  
Software Marketed for External Sale        
Finite Lived Intangible Assets [Line Items]        
Useful life     3 years  
Amortization expense $ 0.2 $ 0.2 $ 0.5 $ 0.4