Loans and Allowance for Credit Losses - Amortized Cost and Unpaid Principal of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	$ 1,659,239		$ 1,501,785
Allowance for credit losses	(15,645)	$ (14,157)	(13,838)	$ (11,537)	$ (11,310)	$ (11,739)
Net loans	1,643,594		1,487,947
Unpaid Principal	1,667,173		1,510,395
Difference	(7,934)		(8,610)
Commercial & industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	418,752		358,128
Allowance for credit losses	(3,418)	(3,080)	(2,914)	(2,961)	(2,901)	(3,027)
Unpaid Principal	420,443		359,900
Difference	(1,691)		(1,772)
Commercial real estate | Owner occupied properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	348,834		349,973
Allowance for credit losses	(2,807)	(2,778)	(3,094)	(2,573)	(2,513)	(3,176)
Unpaid Principal	350,411		351,580
Difference	(1,577)		(1,607)
Commercial real estate | Non-owner occupied and multifamily properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	490,821		482,270
Allowance for credit losses	(3,260)	(3,174)	(3,615)	(3,107)	(3,063)	(2,930)
Unpaid Principal	494,505		486,021
Difference	(3,684)		(3,751)
Residential real estate | 1-4 family residential properties secured by first liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	160,546		73,381
Allowance for credit losses	(3,206)	(2,226)	(1,413)	(620)	(510)	(439)
Unpaid Principal	160,467		73,674
Difference	79		(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	25,156		20,259
Allowance for credit losses	(423)	(392)	(389)	(327)	(301)	(215)
Unpaid Principal	24,970		20,103
Difference	186		156
Residential real estate | 1-4 family residential construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	35,349		44,000
Allowance for credit losses	(206)	(260)	(312)	(231)	(210)	(120)
Unpaid Principal	35,527		44,314
Difference	(178)		(314)
Other construction, land development and raw land loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	95,124		99,182
Allowance for credit losses	(1,996)	(1,925)	(1,803)	(1,462)	(1,550)	(1,635)
Unpaid Principal	96,015		100,075
Difference	(891)		(893)
Obligations of states and political subdivisions in the US
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	35,325		32,539
Allowance for credit losses	(88)	(106)	(79)	(59)	(52)	(32)
Unpaid Principal	35,327		32,540
Difference	(2)		(1)
Agricultural production, including commercial fishing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	40,767		34,099
Allowance for credit losses	(162)	(150)	(145)	(127)	(128)	(91)
Unpaid Principal	40,975		34,263
Difference	(208)		(164)
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	5,551		4,335
Allowance for credit losses	(74)	(61)	(68)	(64)	(75)	(67)
Unpaid Principal	5,498		4,293
Difference	53		42
Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	3,014		3,619
Allowance for credit losses	(5)	$ (5)	(6)	$ (6)	$ (7)	$ (7)
Unpaid Principal	3,035		3,632
Difference	$ (21)		$ (13)