Share-Based Compensation - Restricted Stock Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Weighted Average Fair Value
Unrecognized compensation expense related to non-vested restricted stock awards	$ 5,561
Weighted average period expected for recognition of compensation expense related to non-vested restricted stock awards	1 year 6 months
Total fair value of the shares that were vested and unrestricted during the period	$ 3,723	$ 4,495	$ 5,456
Compensation expense, net of tax	3,816	3,542	3,422
Income tax benefit from compensation expense	$ 1,014	$ 942	$ 910
Restricted Stock
Share-Based Compensation
Vesting period	3 years
Shares Under Restriction
Outstanding at beginning of year (in shares)	63,522	66,929	63,413
Granted (in shares)	41,489	39,731	40,101
Vested and unrestricted (in shares)	(35,358)	(41,354)	(36,352)
Forfeited (in shares)	(410)	(1,784)	(233)
Outstanding at end of period (in shares)	69,243	63,522	66,929
Weighted Average Fair Value
Outstanding at beginning of year (in dollars per share)	$ 83.6	$ 81.58	$ 83.87
Granted (in dollars per share)	79.61	85.3	80.03
Vested and unrestricted (in dollars per share)	84.78	82.03	83.87
Forfeited (in dollars per share)	81.7	81.93	81.62
Outstanding at end of period (in dollars per share)	$ 82.79	$ 83.6	$ 81.58
Restricted Stock | Non-executives employees
Share-Based Compensation
Vesting period	5 years
Restricted Stock | First anniversary of grant date | Non-executives employees
Share-Based Compensation
Vesting percentage (as a percent)	30.00%
Restricted Stock | Second anniversary of grant date | Non-executives employees
Share-Based Compensation
Vesting percentage (as a percent)	30.00%
Restricted Stock | Third anniversary of grant date | Non-executives employees
Share-Based Compensation
Vesting percentage (as a percent)	40.00%
Performance-based Shares Under Restriction
Shares Under Restriction
Outstanding at beginning of year (in shares)	73,232	78,991	75,069
Granted (in shares)	29,457	27,082	30,693
Vested and unrestricted (in shares)	(8,541)	(13,912)	(26,599)
Forfeited (in shares)	(14,489)	(18,929)	(172)
Outstanding at end of period (in shares)	79,659	73,232	78,991
Weighted Average Fair Value
Outstanding at beginning of year (in dollars per share)	$ 83.53	$ 81.4	$ 84.46
Granted (in dollars per share)	79.58	85.11	81.81
Vested and unrestricted (in dollars per share)	84.98	79.27	90.5
Forfeited (in dollars per share)	84.99	80.04	83.39
Outstanding at end of period (in dollars per share)	$ 83.8	$ 83.53	$ 81.4
Performance-based Shares Under Restriction | Minimum
Share-Based Compensation
Actual payouts (as a percent)	0.00%
Performance-based Shares Under Restriction | Maximum
Share-Based Compensation
Actual payouts (as a percent)	200.00%