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Property and Equipment - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Property, Plant and Equipment [Abstract]    
Depreciation expense $ 0.7 $ 0.7
Capitalized computer software, net 1.0 0.1
Capitalized computer software, amortization $ 0.3 $ 0.1