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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 ($)
Dec. 31, 2017
USD ($)
Sep. 30, 2022
USD ($)
vote
$ / shares
shares
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
vote
$ / shares
shares
Sep. 30, 2021
USD ($)
Dec. 31, 2021
$ / 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       48,807,154   48,807,154   48,768,890
Proceeds from issuance of common shares           $ 45,000 $ 24,598,000  
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
Proceeds from issuance of preferred shares           $ 0 120,000,000  
Preferred shares, shares outstanding (in shares) | shares       4,800,000   4,800,000   4,800,000
Preferred dividends       $ 1,987,000 $ 1,988,000 $ 5,962,000 $ 1,988,000  
Stock redemption, exchange ratio           1    
Vested operating partnership units held by current and former employees (in shares) | shares       1,214,759,000   1,214,759,000    
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       $ 47,900,000   $ 47,900,000    
Registration statement filed, amount   $ 50,000,000            
Shares issued (in shares) | shares       1,047   3,592    
Stock purchase plan, average price per share (in dollars per share) | $ / shares       $ 11.81   $ 12.62    
Proceeds from issuance of common shares       $ 12,000   $ 45,000    
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