Commitments and Contingent Liabilities - Maximum obligation to extend credit (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Fixed Rate, Commitments to make loans	$ 486,807	$ 409,813
Fixed Rate, Unused lines of credit	40,254	74,364
Fixed Rate, Standby letters of credit	0
Fixed Rate, Total	527,061	484,177
Variable Rate, Commitments to make loans	689,109	292,290
Variable Rate, Unused lines of credit	586,094	844,106
Variable Rate, Standby letters of credit	10,851	22,250
Variable Rate, Total	$ 1,286,054	$ 1,158,646