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Share and Unit-based Plans - Directors' Phantom Stock Plan (Details)
 12 Months Ended
Dec. 31, 2023
$ / shares
shares
Dec. 31, 2022
$ / shares
shares
Dec. 31, 2021
$ / shares
shares
Phantom stock units      
Share and unit-based plans      
Number of common shares into which units can be converted (in shares) 1    
Units      
Balance at beginning of year (in shares) 34,039 0 4,662
Granted (in shares) 6,513 61,420 17,554
Vested (in shares) (23,509) (27,381) (22,216)
Balance at end of year (in shares) 17,043 34,039 0
Weighted Average Grant Date Fair Value      
Balance at beginning of year (in dollars per share) | $ / shares $ 14.19 $ 0 $ 35.35
Granted (in dollars per share) | $ / shares 11.48 14.35 12.09
Vested (in dollars per share) | $ / shares 13.44 14.55 16.97
Balance at end of year (in dollars per share) | $ / shares $ 14.19 $ 14.19 $ 0
Director's Phantom Stock Plan      
Share and unit-based plans      
Deferral period for grant of units (in years) 3 years    
Number of common shares into which units can be converted (in shares) 1    
Maximum shares authorized under plan (in shares) 650,000    
Shares available for issuance under plan (in shares) 174,576