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Share-Based Plans (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Shares        
Unvested, beginning of period (in shares)     119,778  
Unvested, end of period (in shares) 108,498   108,498  
Restricted Stock        
Shares        
Unvested, beginning of period (in shares)     119,778 135,694
Granted (in shares)   17,775 12,800  
Vested (in shares)   (31,681) (19,975)  
Forfeited (in shares)   (1,400) (4,105)  
Unvested, end of period (in shares) 108,498 120,388 108,498 120,388
Weighted-Average Grant Date Fair Value        
Unvested, beginning of period (in dollars per share)     $ 54.56 $ 52.13
Granted (in dollars per share)   $ 45.75 76.99  
Vested (in dollars per share)   49.08 47.54  
Forfeited (in dollars per share)   53.6 57.77  
Unvested, end of period (in dollars per share) $ 58.38 $ 52.12 $ 58.38 $ 52.12
Additional information        
Fair value of shares vested $ 430,000 $ 199,000 $ 1,450,000 $ 1,660,000
Compensation expense 456,000 463,000 916,000 973,000
Compensation expense after tax 316,000 $ 354,000 587,000 $ 667,000
Unrecognized compensation expense $ 3,480,000   $ 3,480,000  
Weighted average period     2 years 7 months 6 days  
Restricted Stock | Employees        
Summary of restricted stock awards        
Vesting period     5 years  
Restricted Stock | Nonemployee Directors        
Summary of restricted stock awards        
Vesting period     3 years