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Share-Based Compensation - Performance Restricted Stock Units - Narrative (Details) - PRSUs
shares in Thousands, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
shares
Sep. 30, 2022
USD ($)
shares
Sep. 30, 2023
USD ($)
metric
shares
Sep. 30, 2022
USD ($)
metric
shares
Dec. 31, 2022
shares
Dec. 31, 2021
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of units increased (decreased) during the period (in shares) | shares     314      
Recognized share-based compensation expense (benefit) | $ $ 0.1 $ 0.3 $ 0.6 $ 0.9    
Unrecognized compensation cost | $ $ 0.7   $ 0.7      
Nonvested shares outstanding (in shares) | shares 100 443 100 443 280 388
Weighted-average period over which unrecognized compensation cost is expected to be recognized (years)     1 year      
Executive and Senior Officers            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Performance period (years)     1 year      
Award vesting period     4 years      
Requisite service period     5 years      
Executive and Senior Officers | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Target award percentage 0.00%   0.00%      
Executive and Senior Officers | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Target award percentage 200.00%   200.00%      
Executive and Senior Officers | Anniversary 1            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage (ratably on each of the first four anniversary date)     25.00%      
Executive and Senior Officers | Anniversary 2            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage (ratably on each of the first four anniversary date)     25.00%      
Executive and Senior Officers | Anniversary 3            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage (ratably on each of the first four anniversary date)     25.00%      
Executive and Senior Officers | Anniversary 4            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage (ratably on each of the first four anniversary date)     25.00%      
Executive Officers            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Performance period (years)       1 year    
Number of performance award metrics | metric     3 3    
Average share price trading period       20 days    
Last days trading period       20 days    
Dividend yield       0.00%