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Share-Based Compensation - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2021
USD ($)
age
shares
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Apr. 27, 2021
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Capital shares reserved for future issuance | shares       1,280,000
Compensation expense $ 6.0 $ 5.1 $ 2.6  
Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 5 years      
Retirement age | age 65      
Anticipated additional compensation costs to be recognized in future periods $ 4.9      
Weighted average period over which additional compensation cost will be expensed 1 year 9 months 18 days      
Vested in period (in shares) | shares 132,000      
Fair value of awards vested $ 9.3 3.8 $ 1.6  
Restricted Stock Units (RSUs) | Awards Granted in 2017 and 2018        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 3 years      
Restricted Stock Units (RSUs) | Granted In 2019 and 2020        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 3 years      
Restricted Stock Units (RSUs) | Non-Employee Directors Compensation Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 1 year      
Performance Shares        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Anticipated additional compensation costs to be recognized in future periods $ 3.9      
Weighted average period over which additional compensation cost will be expensed 2 years 2 months 12 days      
Vested in period (in shares) | shares 29,000      
Fair value of awards vested $ 4.5 $ 0.0    
Performance Shares | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards vesting target percentage 0.00%      
Performance Shares | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards vesting target percentage 200.00%      
Performance Shares | Share-based Payment Arrangement, Tranche One        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 1 year      
Performance Shares | Share-based Payment Arrangement, Tranche Two        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 2 years      
Performance Shares | Share-based Payment Arrangement, Tranche Three        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 3 years      
Performance Shares | Share-based Payment Arrangement, Tranche Four        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 3 years      
Deferred Share Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vested in period (in shares) | shares 34,949      
Fair value of awards vested $ 2.4