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Operating Leases - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Lessee, Lease, Description [Line Items]        
Weighted average remaining lease term 4 years 1 month 6 days 3 years 10 months 24 days 4 years 1 month 6 days 3 years 10 months 24 days
Weighted average discount rate (as a percent) 6.60% 7.60% 6.60% 7.60%
Operating lease, foreign currency transaction gain, before tax $ 0.7 $ 0.4    
Operating lease, foreign currency transaction gain (loss), before tax     $ 0.1  
Operating lease, foreign currency transaction loss, before tax       $ 3.9
Minimum        
Lessee, Lease, Description [Line Items]        
General term of leased facilities 3 years   3 years  
Leased facilities renewal term 3 years   3 years  
Maximum        
Lessee, Lease, Description [Line Items]        
General term of leased facilities 5 years   5 years  
Leased facilities renewal term 5 years   5 years