Loans - Classes of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	$ 1,742,139	$ 1,635,718
Less allowance for credit losses	(39,651)	(40,518)	$ (40,157)	$ (39,156)
Loans, net	1,702,488	1,595,200
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	668,122	592,301
Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	115,348	118,605
Construction - commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	69,768	49,136
Land acquisition and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	29,064	37,537
Builder lines
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	24,668	34,538
Construction - consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	11,223	10,539
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	293,256	266,267
Less allowance for credit losses		(2,622)	(2,660)	(2,914)
Equity lines
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	51,592	43,300
Less allowance for credit losses		(497)	(593)	(687)
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	10,588	8,938
Amount included related to demand deposit overdrafts	228	284
Consumer finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	468,510
Less allowance for credit losses	(23,578)	(25,969)	$ (24,791)	$ (23,513)
Consumer finance | Automobiles
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	401,276	411,112
Consumer finance | Marine and recreational vehicles
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	$ 67,234	$ 63,445