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Summary of Significant Accounting Policies - Restricted Cash (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Accounting Policies [Abstract]    
Escrow deposit $ 24.2  
Principal amount 0.6  
Restricted cash, excluding certificates of deposit 1.6 $ 2.2
Restricted cash $ 26.4 $ 27.0