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Equity-Based Compensation (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Jul. 29, 2019
Aug. 31, 2017
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Restricted Share Plan | Unvested restricted shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Maximum authorized amount as a percentage of shares authorized     5.00%    
Number of shares authorized (in shares)     3,600,000    
Shares granted automatically upon election to board of directors (in shares)     1,333    
Restricted share vesting period     5 years    
Granted (in shares)     0 0 15,000
Nonvested awards, compensation cost not yet recognized     $ 2,700,000    
Nonvested awards, compensation cost not yet recognized, period for recognition     2 years 3 months 18 days    
Share-based compensation expense     $ 1,300,000 $ 1,300,000 $ 1,300,000
Amended and Restated RSP | Unvested restricted shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Benchmark basis for issuance   $ 30,000      
Board chairman | Amended and Restated RSP | Unvested restricted shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted share vesting period   7 years      
Granted (in shares)   300,000      
Independent directors | Amended and Restated RSP | Unvested restricted shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted share vesting period   5 years      
Granted (in shares)   25,000      
Director          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock issued during period, issued for services (in shares)     0 0 0
Director | Restricted Share Plan | Unvested restricted shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted share vesting period 3 years        
Granted (in shares) 15,000