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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 15,645	$ 11,537	$ 13,838	$ 11,739
Credit Loss Expense (Benefit)	750	(903)	2,519	(797)
Charge-offs	(91)	(48)	(154)	(509)
Recoveries	187	1,396	288	1,549
Ending Balance	16,491	11,982	16,491	11,982
Commercial & industrial loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	3,418	2,961	2,914	3,027
Credit Loss Expense (Benefit)	(55)	(1,344)	412	(1,065)
Charge-offs	(91)	(45)	(140)	(506)
Recoveries	181	1,325	267	1,441
Ending Balance	3,453	2,897	3,453	2,897
Commercial real estate | Owner occupied properties
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	2,807	2,573	3,094	3,176
Credit Loss Expense (Benefit)	(15)	132	(302)	(471)
Charge-offs	0	0	0	0
Recoveries	0	55	0	55
Ending Balance	2,792	2,760	2,792	2,760
Commercial real estate | Non-owner occupied and multifamily properties
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	3,260	3,107	3,615	2,930
Credit Loss Expense (Benefit)	(36)	120	(391)	297
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	3,224	3,227	3,224	3,227
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	3,206	620	1,413	439
Credit Loss Expense (Benefit)	334	73	2,127	254
Charge-offs	0	0	0	0
Recoveries	0	5	0	5
Ending Balance	3,540	698	3,540	698
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	423	327	389	215
Credit Loss Expense (Benefit)	78	30	100	121
Charge-offs	0	0	0	0
Recoveries	5	9	17	30
Ending Balance	506	366	506	366
Residential real estate | 1-4 family residential construction loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	206	231	312	120
Credit Loss Expense (Benefit)	(31)	50	(137)	161
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	175	281	175	281
Other construction, land development and raw land loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,996	1,462	1,803	1,635
Credit Loss Expense (Benefit)	480	15	673	(158)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	2,476	1,477	2,476	1,477
Obligations of states and political subdivisions in the US
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	88	59	79	32
Credit Loss Expense (Benefit)	(11)	4	(2)	31
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	77	63	77	63
Agricultural production, including commercial fishing
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	162	127	145	91
Credit Loss Expense (Benefit)	2	13	19	34
Charge-offs	0	0	0	0
Recoveries	0	0	0	15
Ending Balance	164	140	164	140
Consumer loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	74	64	68	67
Credit Loss Expense (Benefit)	4	3	21	(1)
Charge-offs	0	(3)	(14)	(3)
Recoveries	1	2	4	3
Ending Balance	79	66	79	66
Other loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	5	6	6	7
Credit Loss Expense (Benefit)	0	1	(1)	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	$ 5	$ 7	$ 5	$ 7