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Shareholders' Equity (Details)
 1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2021
USD ($)
$ / shares
shares
Dec. 22, 2020
USD ($)
Jan. 31, 2021
USD ($)
Dec. 31, 2017
USD ($)
Sep. 30, 2023
USD ($)
vote
$ / shares
shares
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
vote
$ / shares
shares
Sep. 30, 2022
USD ($)
Dec. 31, 2022
$ / shares
shares
Class of Stock [Line Items]                  
Common shares, shares authorized (in shares) | shares         500,000,000   500,000,000   500,000,000
Common shares, par value (in dollars per share) | $ / shares         $ 0.01   $ 0.01   $ 0.01
Number of votes per common share | vote         1   1    
Common shares, shares outstanding (in shares) | shares         48,858,127   48,858,127   48,808,105
Proceeds from issuance of common shares | $             $ 44,000 $ 45,000  
Preferred shares, shares authorized (in shares) | shares         100,000,000   100,000,000   100,000,000
Preferred shares, par value (in dollars per share) | $ / shares         $ 0.01   $ 0.01   $ 0.01
Preferred shares, shares issued (in shares) | shares         4,800,000   4,800,000   4,800,000
Preferred shares, shares outstanding (in shares) | shares         4,800,000   4,800,000   4,800,000
Preferred dividends | $         $ 1,987,000 $ 1,987,000 $ 5,962,000 $ 5,962,000  
Stock redemption, exchange ratio             1    
Vested operating partnership units held by current and former employees (in shares) | shares         1,587,317,000   1,587,317,000    
ATM Plan                  
Class of Stock [Line Items]                  
Stock purchase plan, authorized amount | $     $ 100,000,000            
Stock purchase plan, remaining authorized repurchase amount | $         $ 77,500,000   $ 77,500,000    
DRSPP Plan                  
Class of Stock [Line Items]                  
Stock purchase plan, authorized amount | $       $ 50,000,000          
Stock purchase plan, remaining authorized repurchase amount | $         $ 47,800,000   $ 47,800,000    
Registration statement filed, amount | $   $ 50,000,000              
Shares issued (in shares) | shares         1,321   4,187    
Stock purchase plan, average price per share (in dollars per share) | $ / shares         $ 9.49   $ 10.42    
Proceeds from issuance of common shares | $         $ 12,000   $ 44,000    
Series A Preferred Shares                  
Class of Stock [Line Items]                  
Preferred shares, par value (in dollars per share) | $ / shares $ 0.01                
Preferred shares, shares issued (in shares) | shares 4,800,000                
Preferred stock distribution rate 6.625%       6.625%   6.625%    
Proceeds from issuance of preferred shares | $ $ 115,900,000                
Liquidation preference per share (in dollars per share) | $ / shares $ 25.00                
Liquidation preference per share per annum (in dollars per share) | $ / shares $ 1.65625                
Change of control, redemption option, period following change of control 120 days                
Share cap (in shares) | shares 3.701