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Shareholders' Equity (Details)
 12 Months Ended
Jun. 30, 2021
USD ($)
$ / shares
shares
Dec. 28, 2017
USD ($)
Dec. 31, 2021
USD ($)
vote
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
Stockholders Equity Note Disclosure [Line Items]          
Common shares, shares authorized (up to) (in shares) | shares     500,000,000 500,000,000  
Common shares, par value (in dollars per share) | $ / shares     $ 0.01 $ 0.01  
Number of votes per common share | vote     1    
Common shares, shares outstanding (in shares) | shares     48,768,890 46,973,473  
Proceeds from issuance of common shares     $ 24,612,000 $ 182,000 $ 7,298,000
Preferred shares, shares authorized (up to) (in shares) | shares     100,000,000 100,000,000  
Preferred shares, par value (in dollars per share) | $ / shares     $ 0.01 $ 0.01  
Preferred shares, shares issued (in shares) | shares 4,800,000   4,800,000 0  
Preferred shares, shares outstanding (in shares) | shares 4,800,000   4,800,000 0  
Proceeds from issuance of preferred shares     $ 120,000,000 $ 0 0
Preferred dividends     $ 3,975,000 $ 0 $ 0
Stock redemption, exchange ratio     1    
Vested operating partnership common units held by unaffiliated third parties (in shares) | shares     976,102    
DRSP Plan          
Stockholders Equity Note Disclosure [Line Items]          
Stock purchase plan, authorized amount   $ 50,000,000      
Remaining authorized repurchase amount     $ 47,900,000    
New DRSPP          
Stockholders Equity Note Disclosure [Line Items]          
Additional common shares issued (in shares) | shares     149,686    
Weighted average price per share (in dollars per share) | $ / shares     $ 13.77    
Proceeds from issuance of common shares     $ 2,100,000    
ATM Plan          
Stockholders Equity Note Disclosure [Line Items]          
Common shares, shares outstanding (in shares) | shares     1,595,528    
Stock purchase plan, authorized amount   $ 100,000,000      
Weighted average price per share (in dollars per share) | $ / shares     $ 14.13    
Proceeds from issuance of common shares     $ 22,500,000    
Remaining authorized repurchase amount     $ 77,500,000    
Series A Preferred Shares          
Stockholders Equity Note Disclosure [Line Items]          
Preferred shares, dividend rate, percentage 6.625%   6.625%    
Proceeds from issuance of preferred shares $ 115,900,000        
Liquidation preference per share (in dollars per share) | $ / shares $ 25        
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