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Fixed Assets, Net - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Property, Plant and Equipment    
Depreciation expense $ 6.7 $ 4.3
Software, including software development costs    
Property, Plant and Equipment    
Software development costs capitalized 0.3 0.6
Amortization of software development costs $ 0.3 $ 0.3