Loans and Allowance for Credit Losses - Amortized Cost and Unpaid Principal of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	$ 1,811,135	$ 1,789,497
Allowance for credit losses	(17,533)	(17,270)	$ (14,157)	$ (13,838)
Net loans	1,793,602	1,772,227
Unpaid Principal	1,819,375	1,798,053
Difference	(8,240)	(8,556)
Commercial & industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	396,994	411,387
Allowance for credit losses	(4,052)	(3,438)	(3,080)	(2,914)
Unpaid Principal	398,734	413,293
Difference	(1,740)	(1,906)
Commercial real estate | Owner occupied properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	370,899	366,741
Allowance for credit losses	(2,893)	(2,867)	(2,778)	(3,094)
Unpaid Principal	372,507	368,357
Difference	(1,608)	(1,616)
Commercial real estate | Non-owner occupied and multifamily properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	526,269	515,528
Allowance for credit losses	(3,419)	(3,294)	(3,174)	(3,615)
Unpaid Principal	529,904	519,115
Difference	(3,635)	(3,587)
Residential real estate | 1-4 family residential properties secured by first liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	218,848	203,738
Allowance for credit losses	(3,425)	(3,470)	(2,226)	(1,413)
Unpaid Principal	218,552	203,534
Difference	296	204
Residential real estate | 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	35,683	33,996
Allowance for credit losses	(581)	(551)	(392)	(389)
Unpaid Principal	35,460	33,783
Difference	223	213
Residential real estate | 1-4 family residential construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	27,538	30,976
Allowance for credit losses	(159)	(191)	(260)	(312)
Unpaid Principal	27,751	31,239
Difference	(213)	(263)
Other construction, land development and raw land loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	152,162	148,373
Allowance for credit losses	(2,675)	(3,127)	(1,925)	(1,803)
Unpaid Principal	153,537	149,788
Difference	(1,375)	(1,415)
Obligations of states and political subdivisions in the US
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	30,254	30,407
Allowance for credit losses	(105)	(80)	(106)	(79)
Unpaid Principal	30,256	30,409
Difference	(2)	(2)
Agricultural production, including commercial fishing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	43,457	41,007
Allowance for credit losses	(156)	(168)	(150)	(145)
Unpaid Principal	43,691	41,237
Difference	(234)	(230)
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	6,506	6,241
Allowance for credit losses	(60)	(81)	(61)	(68)
Unpaid Principal	6,444	6,180
Difference	62	61
Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	2,525	1,103
Allowance for credit losses	(8)	(3)	$ (5)	$ (6)
Unpaid Principal	2,539	1,118
Difference	$ (14)	$ (15)