Recent Accounting Pronouncements - Impact of ASC (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investment Securities
Allowance for credit losses on investments	$ 213,000	$ 0
Loans
Allowance for credit losses	35,843,000	31,146,000	$ 31,572,000	$ 34,246,000
Allowance for credit losses on loans and investments securities		31,146,000
Liabilities [Abstract]
Off balance sheet liability, Allowance for loan losses	7,400,000	3,200,000
Commercial
Loans
Allowance for credit losses	27,902,000	23,431,000	22,806,000	25,811,000
Commercial | Commercial and industrial
Loans
Allowance for credit losses	9,894,000	9,233,000	9,218,000	10,547,000
Commercial | Real estate construction
Loans
Allowance for credit losses	6,111,000	1,437,000	810,000	690,000
Commercial | Commercial real estate
Loans
Allowance for credit losses	11,897,000	12,761,000	12,778,000	14,574,000
Consumer
Loans
Allowance for credit losses	7,941,000	7,715,000	8,766,000	8,435,000
Consumer | Other revolving and installment
Loans
Allowance for credit losses	212,000	540,000	512,000	789,000
Real estate first mortgage | Consumer | Residential
Loans
Allowance for credit losses	6,578,000	5,857,000	6,874,000	6,174,000
Real estate junior lien | Consumer | Residential
Loans
Allowance for credit losses	1,151,000	1,318,000	$ 1,380,000	$ 1,472,000
Unfunded commitments
Liabilities [Abstract]
Off balance sheet liability, Allowance for loan losses	7,400,000	3,244,000
Mortgage backed securities - Residential agency
Investment Securities
Allowance for credit losses on investments	$ 99,000
Accounting Standards Update 2016-13 | Unfunded commitments
Liabilities [Abstract]
Off balance sheet liability, Allowance for loan losses		1,900,000
Cumulative Effect, Period of Adoption, Adjusted Balance | Accounting Standards Update 2016-13
Investment Securities
Allowance for credit losses on investments		172,000
Loans
Allowance for credit losses		35,003,000
Allowance for credit losses on loans and investments securities		35,175,000
Cumulative Effect, Period of Adoption, Adjusted Balance | Accounting Standards Update 2016-13 | Commercial
Loans
Allowance for credit losses		25,142,000
Cumulative Effect, Period of Adoption, Adjusted Balance | Accounting Standards Update 2016-13 | Commercial | Commercial and industrial
Loans
Allowance for credit losses		8,526,000
Cumulative Effect, Period of Adoption, Adjusted Balance | Accounting Standards Update 2016-13 | Commercial | Real estate construction
Loans
Allowance for credit losses		3,986,000
Cumulative Effect, Period of Adoption, Adjusted Balance | Accounting Standards Update 2016-13 | Commercial | Commercial real estate
Loans
Allowance for credit losses		12,630,000
Cumulative Effect, Period of Adoption, Adjusted Balance | Accounting Standards Update 2016-13 | Consumer
Loans
Allowance for credit losses		9,861,000
Cumulative Effect, Period of Adoption, Adjusted Balance | Accounting Standards Update 2016-13 | Consumer | Other revolving and installment
Loans
Allowance for credit losses		444,000
Cumulative Effect, Period of Adoption, Adjusted Balance | Accounting Standards Update 2016-13 | Real estate first mortgage | Consumer | Residential
Loans
Allowance for credit losses		8,126,000
Cumulative Effect, Period of Adoption, Adjusted Balance | Accounting Standards Update 2016-13 | Real estate junior lien | Consumer | Residential
Loans
Allowance for credit losses		1,291,000
Cumulative Effect, Period of Adoption, Adjusted Balance | Accounting Standards Update 2016-13 | Unfunded commitments
Liabilities [Abstract]
Off balance sheet liability, Allowance for loan losses		5,159,000
Cumulative Effect, Period of Adoption, Adjusted Balance | Accounting Standards Update 2016-13 | Obligations of state and political agencies
Investment Securities
Allowance for credit losses on investments		110,000
Cumulative Effect, Period of Adoption, Adjusted Balance | Accounting Standards Update 2016-13 | Mortgage backed securities - Residential agency
Investment Securities
Allowance for credit losses on investments		62,000
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13
Investment Securities
Allowance for credit losses on investments		172,000
Loans
Allowance for credit losses		3,857,000
Allowance for credit losses on loans and investments securities		4,029,000
Liabilities [Abstract]
Off balance sheet liability, Allowance for loan losses		1,900,000
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Commercial
Loans
Allowance for credit losses		1,711,000
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Commercial | Commercial and industrial
Loans
Allowance for credit losses		(707,000)
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Commercial | Real estate construction
Loans
Allowance for credit losses		2,549,000
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Commercial | Commercial real estate
Loans
Allowance for credit losses		(131,000)
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Consumer
Loans
Allowance for credit losses		2,146,000
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Consumer | Other revolving and installment
Loans
Allowance for credit losses		(96,000)
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Real estate first mortgage | Consumer | Residential
Loans
Allowance for credit losses		2,269,000
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Real estate junior lien | Consumer | Residential
Loans
Allowance for credit losses		(27,000)
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Unfunded commitments
Liabilities [Abstract]
Off balance sheet liability, Allowance for loan losses		1,915,000
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Obligations of state and political agencies
Investment Securities
Allowance for credit losses on investments		110,000
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Mortgage backed securities - Residential agency
Investment Securities
Allowance for credit losses on investments		$ 62,000