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Benefit Plans - Status of Unexercised Stock Options (Details) - $ / shares
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Number of stock options      
Number of stock options, outstanding at beginning of year (in shares) 468,163 548,925 600,806
Number of stock options, granted (in shares) 0 0 0
Number of stock options, exercised (in shares) (65,972) 0 (51,881)
Number of stock options, forfeited (in shares) 0 0 0
Number of stock options, expired (in shares) 0 (80,762) 0
Number of stock options, outstanding at the end of year (in shares) 402,191 468,163 548,925
Weighted average exercise price      
Weighted average exercise price, outstanding at beginning of year (in dollars per share) $ 19.89 $ 19.37 $ 19.01
Weighted average exercise price, granted (in dollars per share) 0 0 0
Weighted average exercise price, exercised (in dollars per share) 18.34 0 15.23
Weighted average exercise price, forfeited (in dollars per share) 0 0 0
Weighted average exercise price, expired (in dollars per share) 0 16.38 0
Weighted average exercise price, outstanding at the end of year (in dollars per share) $ 20.14 $ 19.89 $ 19.37