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Leases, Additional Details (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Lessee, lease, description        
Operating lease, weighted-average remaining lease term 8 years   8 years  
Operating lease, weighted-average discount rate (as a percentage) 4.50%   4.50%  
Operating lease costs $ 1.9 $ 1.8 $ 5.6 $ 7.7
Operating lease payments     $ 6.4 $ 5.6
Minimum        
Lessee, lease, description        
Lessee, operating lease, remaining lease term 1 year   1 year  
Maximum        
Lessee, lease, description        
Lessee, operating lease, remaining lease term 10 years   10 years