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Stock and Incentive Compensation Plans - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Number of Shares        
Outstanding at beginning of period (in shares) 353,473 504,437 504,437  
Exercised (in shares) (46,009) (55,897)    
Expired (in shares) (45,680) (11,081)    
Outstanding at end of period (in shares) 261,784 437,459 353,473 504,437
Outstanding and exercisable (in shares) 261,784 437,459    
Weighted Average Exercise Price        
Outstanding at beginning of period (in dollars per share) $ 31.49 $ 29.46 $ 29.46  
Exercised (in dollars per share) 27.80 17.35    
Expired (in dollars per share) 35.52 33.63    
Outstanding at end of period (in dollars per share) 31.43 30.90 $ 31.49 $ 29.46
Outstanding and exercisable (in dollars per share) $ 31.43 $ 30.90    
Weighted average remaining contractual term (in years) 3 years 8 months 19 days 3 years 10 months 17 days 4 years 5 months 15 days 5 years 1 month 17 days
Weighted average remaining contractual term, outstanding and exercisable (in years) 3 years 8 months 19 days 3 years 10 months 17 days    
Aggregate Intrinsic Value $ 758 $ 917 $ 1,670 $ 3,736
Aggregate Intrinsic Value, exercised 282 918    
Aggregate Intrinsic Value, outstanding and exercisable $ 758 $ 917