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Share-Based Compensation and Capital Stock - Narrative (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
USD ($)
shares
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2022
USD ($)
award_type
shares
Jun. 30, 2021
USD ($)
shares
Share-Based Compensation and Capital Stock [Line Items]        
Stock repurchased during period (in shares) | shares 0 1,582 68,486 1,582
Cost of shares repurchased | $   $ 0.2 $ 9.9 $ 0.2
Stock redeemed during period (in shares) | shares 2,422 1,156 34,848 47,655
Stock redeemed during period | $ $ 0.3 $ 0.1 $ 5.2 $ 5.4
Restricted stock awards        
Share-Based Compensation and Capital Stock [Line Items]        
Types of awards granted | award_type     2  
Restricted stock awards | Minimum        
Share-Based Compensation and Capital Stock [Line Items]        
Performance period, duration     9 months  
Restricted stock awards | Maximum        
Share-Based Compensation and Capital Stock [Line Items]        
Performance period, duration     60 months  
Performance vested restricted stock units        
Share-Based Compensation and Capital Stock [Line Items]        
Types of awards granted | award_type     3  
Performance vested restricted stock units | Minimum        
Share-Based Compensation and Capital Stock [Line Items]        
Performance period, duration     9 months  
Performance period, percent     0.00%  
Performance vested restricted stock units | Maximum        
Share-Based Compensation and Capital Stock [Line Items]        
Performance period, duration     60 months  
Performance period, percent     300.00%