Loans and Allowance for Credit Losses - Amortized Cost and Unpaid Principal of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	$ 1,535,187	$ 1,501,785
Allowance for credit losses	(14,157)	(13,838)	$ (11,310)	$ (11,739)
Net loans	1,521,030	1,487,947
Unpaid Principal	1,543,812	1,510,395
Difference	(8,625)	(8,610)
Commercial & industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	364,109	358,128
Allowance for credit losses	(3,080)	(2,914)	(2,901)	(3,027)
Unpaid Principal	365,824	359,900
Difference	(1,715)	(1,772)
Commercial real estate | Owner occupied properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	343,162	349,973
Allowance for credit losses	(2,778)	(3,094)	(2,513)	(3,176)
Unpaid Principal	344,734	351,580
Difference	(1,572)	(1,607)
Commercial real estate | Non-owner occupied and multifamily properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	473,227	482,270
Allowance for credit losses	(3,174)	(3,615)	(3,063)	(2,930)
Unpaid Principal	476,897	486,021
Difference	(3,670)	(3,751)
Residential real estate | 1-4 family residential properties secured by first liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	112,214	73,381
Allowance for credit losses	(2,226)	(1,413)	(510)	(439)
Unpaid Principal	112,758	73,674
Difference	(544)	(293)
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	23,027	20,259
Allowance for credit losses	(392)	(389)	(301)	(215)
Unpaid Principal	22,864	20,103
Difference	163	156
Residential real estate | 1-4 family residential construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	40,652	44,000
Allowance for credit losses	(260)	(312)	(210)	(120)
Unpaid Principal	40,881	44,314
Difference	(229)	(314)
Other construction, land development and raw land loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	91,712	99,182
Allowance for credit losses	(1,925)	(1,803)	(1,550)	(1,635)
Unpaid Principal	92,615	100,075
Difference	(903)	(893)
Obligations of states and political subdivisions in the US
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	42,257	32,539
Allowance for credit losses	(106)	(79)	(52)	(32)
Unpaid Principal	42,258	32,540
Difference	(1)	(1)
Agricultural production, including commercial fishing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	37,429	34,099
Allowance for credit losses	(150)	(145)	(128)	(91)
Unpaid Principal	37,615	34,263
Difference	(186)	(164)
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	4,661	4,335
Allowance for credit losses	(61)	(68)	(75)	(67)
Unpaid Principal	4,617	4,293
Difference	44	42
Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	2,737	3,619
Allowance for credit losses	(5)	(6)	$ (7)	$ (7)
Unpaid Principal	2,749	3,632
Difference	$ (12)	$ (13)