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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2022
Dec. 31, 2021
Statement of Financial Position [Abstract]    
Preferred shares of beneficial interest, par value (in dollars per share) $ 0.01 $ 0.01
Preferred shares of beneficial interest, authorized (in shares) 50,000,000 50,000,000
Preferred shares of beneficial interest, issued (in shares) 9,017,588 8,736,719
Preferred shares of beneficial interest, outstanding (in shares) 9,017,588 8,736,719
Common shares of beneficial interest, par value (in dollars per share) $ 0.01 $ 0.01
Common shares of beneficial interest, authorized (in shares) 250,000,000 250,000,000
Common shares of beneficial interest, issued (in shares) 89,842,145 91,198,929
Common shares of beneficial interest, outstanding (in shares) 89,842,145 91,198,929