Loans and Allowance for Credit Losses - Activity in ACL Related to Loans Held for Investment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 11,537	$ 14,539	$ 11,739	$ 16,625
Credit Loss Expense (Benefit)	(903)	(762)	(797)	(2,828)
Charge-offs	(48)	0	(509)	(273)
Recoveries	1,396	39	1,549	292
Ending Balance	11,982	13,816	11,982	13,816
Commercial & industrial loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	2,961	4,291	3,027	4,348
Credit Loss Expense (Benefit)	(1,344)	(332)	(1,065)	(328)
Charge-offs	(45)	0	(506)	(273)
Recoveries	1,325	23	1,441	235
Ending Balance	2,897	3,982	2,897	3,982
Commercial real estate | Owner occupied properties
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	2,573	3,340	3,176	3,579
Credit Loss Expense (Benefit)	132	151	(471)	(92)
Charge-offs	0	0	0	0
Recoveries	55	2	55	6
Ending Balance	2,760	3,493	2,760	3,493
Commercial real estate | Non-owner occupied and multifamily properties
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	3,107	3,841	2,930	4,944
Credit Loss Expense (Benefit)	120	35	297	(1,068)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	3,227	3,876	3,227	3,876
Residential real estate | 1-4 family residential properties secured by first liens
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	620	630	439	673
Credit Loss Expense (Benefit)	73	(154)	254	(197)
Charge-offs	0	0	0	0
Recoveries	5	0	5	0
Ending Balance	698	476	698	476
Residential real estate | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	327	340	215	419
Credit Loss Expense (Benefit)	30	(42)	121	(141)
Charge-offs	0	0	0	0
Recoveries	9	9	30	29
Ending Balance	366	307	366	307
Residential real estate | 1-4 family residential construction loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	231	231	120	454
Credit Loss Expense (Benefit)	50	(47)	161	(270)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	281	184	281	184
Other construction, land development and raw land loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,462	1,670	1,635	1,994
Credit Loss Expense (Benefit)	15	(391)	(158)	(715)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	1,477	1,279	1,477	1,279
Obligations of states and political subdivisions in the US
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	59	39	32	44
Credit Loss Expense (Benefit)	4	(3)	31	(8)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	63	36	63	36
Agricultural production, including commercial fishing
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	127	57	91	49
Credit Loss Expense (Benefit)	13	32	34	25
Charge-offs	0	0	0	0
Recoveries	0	5	15	20
Ending Balance	140	94	140	94
Consumer loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	64	94	67	118
Credit Loss Expense (Benefit)	3	(11)	(1)	(37)
Charge-offs	(3)	0	(3)	0
Recoveries	2	0	3	2
Ending Balance	66	83	66	83
Other loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	6	6	7	3
Credit Loss Expense (Benefit)	1	0	0	3
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	$ 7	$ 6	$ 7	$ 6