Income Taxes - Components of Net Deferred Tax Asset (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Allowance for credit losses	$ 7,606	$ 6,751
Fair value adjustments – business combination	1,240	1,685
Deferred compensation	3,344	2,787
Net operating loss carryover	327	346
Post-retirement benefits	696	722
Unrealized loss on interest rate swap	81	161
Nonaccrual loan interest	509	478
Accrued expenses	1,718	681
Deferred fees and costs	1,259	1,613
Unrealized loss on securities available for sale	188	0
Operating lease liability	4,845	4,214
Other	383	300
Deferred tax assets	22,196	19,738
Deferred tax liabilities:
Unrealized gain on securities available for sale	0	4,077
Premises and equipment	3,093	2,997
Unrealized gain on equity securities	292	294
Intangibles – section 197	2,494	2,399
Mortgage servicing rights	366	321
Operating lease asset	4,649	4,079
Other	220	293
Deferred tax liabilities	11,114	14,460
Net deferred tax asset	$ 11,082	$ 5,278