Loans and Allowance for Credit Losses - Activity in ACL Related to Loans Held for Investment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 14,157	$ 11,310	$ 13,838	$ 11,739
Credit Loss Expense (Benefit)	1,510	273	1,769	106
Charge-offs	(49)	(166)	(63)	(461)
Recoveries	27	120	101	153
Ending Balance	15,645	11,537	15,645	11,537
Commercial & industrial loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	3,080	2,901	2,914	3,027
Credit Loss Expense (Benefit)	366	123	467	279
Charge-offs	(49)	(166)	(49)	(461)
Recoveries	21	103	86	116
Ending Balance	3,418	2,961	3,418	2,961
Commercial real estate | Owner occupied properties
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	2,778	2,513	3,094	3,176
Credit Loss Expense (Benefit)	29	60	(287)	(603)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	2,807	2,573	2,807	2,573
Commercial real estate | Non-owner occupied and multifamily properties
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	3,174	3,063	3,615	2,930
Credit Loss Expense (Benefit)	86	44	(355)	177
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	3,260	3,107	3,260	3,107
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	2,226	510	1,413	439
Credit Loss Expense (Benefit)	980	110	1,793	181
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	3,206	620	3,206	620
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	392	301	389	215
Credit Loss Expense (Benefit)	26	17	22	91
Charge-offs	0	0	0	0
Recoveries	5	9	12	21
Ending Balance	423	327	423	327
Residential real estate | 1-4 family residential construction loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	260	210	312	120
Credit Loss Expense (Benefit)	(54)	21	(106)	111
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	206	231	206	231
Other construction, land development and raw land loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,925	1,550	1,803	1,635
Credit Loss Expense (Benefit)	71	(88)	193	(173)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	1,996	1,462	1,996	1,462
Obligations of states and political subdivisions in the US
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	106	52	79	32
Credit Loss Expense (Benefit)	(18)	7	9	27
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	88	59	88	59
Agricultural production, including commercial fishing
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	150	128	145	91
Credit Loss Expense (Benefit)	12	(8)	17	21
Charge-offs	0	0	0	0
Recoveries	0	7	0	15
Ending Balance	162	127	162	127
Consumer loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	61	75	68	67
Credit Loss Expense (Benefit)	12	(12)	17	(4)
Charge-offs	0	0	(14)	0
Recoveries	1	1	3	1
Ending Balance	74	64	74	64
Other loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	5	7	6	7
Credit Loss Expense (Benefit)	0	(1)	(1)	(1)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	$ 5	$ 6	$ 5	$ 6