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Leases - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]      
Restricted cash related to lease obligations $ 5.0 $ 5.2  
Operating lease costs 6.3 5.6  
Variable lease costs 1.7 2.0  
Short-term lease, cost $ 0.2 0.2  
Rent expense     $ 3.6
Sublease income   $ 0.7 $ 0.9
Weighted average remaining operating lease term 4 years 3 months 18 days 5 years 1 month 6 days  
Weighted average discount rate 7.30% 6.60%  
Cash paid $ 4.5 $ 3.6