Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Allowance for credit losses	$ 14,733	$ 13,731
Lease liability	7,119	7,267
Interest income on nonperforming loans	870	992
Compensation and benefits	12,936	12,414
Purchase accounting adjustments	323	424
Liabilities held at fair value	78	54
Deferred loan fees and costs	1,290	1,111
Net operating loss carryforwards	0	491
Other	753	744
Total	38,102	37,228
Deferred tax liabilities:
Prepaid pension	12,019	11,813
Right of use asset	6,763	6,955
Depreciation	3,068	3,505
Intangibles	1,675	1,600
Leases	2,199	2,688
Taxable bank-owned life insurance policies	0	1,834
Contingent Commissions	871	778
Other	1,336	855
Total deferred tax liabilities	27,931	30,028
Net deferred tax asset at year-end	10,171	7,200	$ 6,766
Net deferred tax asset at beginning of year	7,200	6,766
Increase in net deferred tax asset	2,971	434
Investments in tax credit structures accounting standard adoption recorded through equity	111	0
Deferred tax benefit	$ (3,082)	$ (434)	$ 910