Allowance for Credit Losses - Schedule of Changes in the Allowance for Loan Losses (Details) - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Allowance for loan losses:
Charge-offs	$ (8,812,000)	$ (112,000)	$ (68,000)
Recoveries	90,000	46,000	38,000
Provisions (credits)	9,000,000			$ 833,000	$ 10,000,000	$ 2,700,000
Loans receivables:
Loans receivables Ending balance	904,386,000				904,386,000		$ 881,232,000
Residential 1-4 Family First Mortgages [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance			1,608,000		1,608,000
Allowance for credit losses, ending balance	1,497,000				1,497,000
Residential Construction Mortgage [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance			858,000		858,000
Allowance for credit losses, ending balance	810,000				810,000
Real Estate [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance			5,751,000		5,751,000
Allowance for credit losses, ending balance	6,581,000				6,581,000
Lines of Credit [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance			1,674,000		1,674,000
Allowance for credit losses, ending balance	523,000				523,000
Other Commercial and Industrial [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance			3,281,000		3,281,000
Allowance for credit losses, ending balance	2,735,000				2,735,000
Paycheck Protection Program [Member]
Loans receivables:
Loans receivables Ending balance	125,000				125,000
Ending balance: related to loans individually evaluated for impairment	0				0
Ending balance: collectively evaluated for impairment	125,000				125,000
Tax Exempt Loans [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance			1,000		1,000
Allowance for credit losses, ending balance	1,000				1,000
Home Equity and Junior Liens [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance			657,000		657,000
Allowance for credit losses, ending balance	746,000				746,000
Other Consumer [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance			2,145,000		2,145,000
Allowance for credit losses, ending balance	4,381,000				4,381,000
Unallocated [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance			15,975,000		15,975,000
Allowance for credit losses, ending balance	17,274,000				17,274,000
Allowance For Credit Loss [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance	0
Allowance for credit losses, ending balance	0	0			0
Allowance For Credit Loss [Member] | Paycheck Protection Program [Member]
Allowance for loan losses:
Charge-offs	0
Recoveries	0
Provisions (credits)	0
Ending balance: related to loans individually evaluated for impairment	0				0
CECL ACL January 1, 2023	0				0
Residential Portfolio Segment [Member] | Residential 1-4 Family First Mortgages [Member]
Loans receivables:
Loans receivables Ending balance	255,235,000				255,235,000
Ending balance: related to loans individually evaluated for impairment	1,733,000				1,733,000
Ending balance: collectively evaluated for impairment	253,502,000				253,502,000
Residential Portfolio Segment [Member] | Residential Construction Mortgage [Member]
Loans receivables:
Loans receivables Ending balance	4,077,000				4,077,000
Ending balance: related to loans individually evaluated for impairment	0				0
Ending balance: collectively evaluated for impairment	4,077,000				4,077,000
Residential Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Residential 1-4 Family First Mortgages [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance	1,536,000		1,608,000	2,036,000	1,608,000
Charge-offs	0			(60,000)	0
Recoveries	23,000			0	31,000
Provisions (credits)	(1,000)			(2,000)	(142,000)
Allowance for credit losses, ending balance	1,497,000	1,536,000		2,007,000	1,497,000	2,007,000
Ending balance: related to loans individually evaluated for impairment	42,000			126,000	42,000	126,000
CECL ACL January 1, 2023	1,455,000			1,881,000	1,455,000	1,881,000
Loans receivables:
Loans receivables Ending balance				252,956,000		252,956,000
Ending balance: related to loans individually evaluated for impairment				1,681,000		1,681,000
Ending balance: collectively evaluated for impairment				251,275,000		251,275,000
Residential Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Residential Construction Mortgage [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance	815,000		858,000	634,000	858,000
Charge-offs	0			0	0
Recoveries	0			0	0
Provisions (credits)	172,000			40,000	(48,000)
Allowance for credit losses, ending balance	810,000	815,000		872,000	810,000	872,000
Ending balance: related to loans individually evaluated for impairment	0			0	0	0
CECL ACL January 1, 2023	810,000			872,000	810,000	872,000
Loans receivables:
Loans receivables Ending balance				2,090,000		2,090,000
Ending balance: related to loans individually evaluated for impairment				0		0
Ending balance: collectively evaluated for impairment				2,090,000		2,090,000
Commercial Portfolio Segment [Member]
Loans receivables:
Loans receivables Ending balance				896,476,000		896,476,000
Ending balance: related to loans individually evaluated for impairment				22,729,000		22,729,000
Ending balance: collectively evaluated for impairment				873,747,000		873,747,000
Commercial Portfolio Segment [Member] | Real Estate [Member]
Loans receivables:
Loans receivables Ending balance	378,805,000				378,805,000
Ending balance: related to loans individually evaluated for impairment	9,518,000				9,518,000
Ending balance: collectively evaluated for impairment	369,287,000				369,287,000
Commercial Portfolio Segment [Member] | Lines of Credit [Member]
Loans receivables:
Loans receivables Ending balance	64,672,000				64,672,000
Ending balance: related to loans individually evaluated for impairment	1,455,000				1,455,000
Ending balance: collectively evaluated for impairment	63,217,000				63,217,000
Commercial Portfolio Segment [Member] | Other Commercial and Industrial [Member]
Loans receivables:
Loans receivables Ending balance	88,247,000				88,247,000
Ending balance: related to loans individually evaluated for impairment	6,226,000				6,226,000
Ending balance: collectively evaluated for impairment	82,021,000				82,021,000
Commercial Portfolio Segment [Member] | Tax Exempt Loans [Member]
Loans receivables:
Loans receivables Ending balance	2,658,000			3,451,000	2,658,000	3,451,000
Ending balance: related to loans individually evaluated for impairment	0			0	0	0
Ending balance: collectively evaluated for impairment	2,658,000			3,451,000	2,658,000	3,451,000
Commercial Portfolio Segment [Member] | Home Equity and Junior Liens [Member]
Loans receivables:
Loans receivables Ending balance				34,666,000		34,666,000
Ending balance: related to loans individually evaluated for impairment				712,000		712,000
Ending balance: collectively evaluated for impairment				33,954,000		33,954,000
Commercial Portfolio Segment [Member] | Other Consumer [Member]
Loans receivables:
Loans receivables Ending balance				81,319,000		81,319,000
Ending balance: related to loans individually evaluated for impairment				0		0
Ending balance: collectively evaluated for impairment				81,319,000		81,319,000
Commercial Portfolio Segment [Member] | Allowance For Credit Loss [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance			15,975,000	18,796,000	15,975,000	15,319,000
Adoption of New Accounting Standard						1,886,000
Charge-offs				(3,873,000)	(8,993,000)	(4,365,000)
Recoveries				46,000	174,000	252,000
Provisions (credits)				798,000	10,118,000	2,675,000
Allowance for credit losses, ending balance	17,274,000			15,767,000	17,274,000	15,767,000
Ending balance: related to loans individually evaluated for impairment				3,528,000		3,528,000
CECL ACL January 1, 2023				12,239,000		12,239,000
Commercial Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Residential 1-4 Family First Mortgages [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance						714,000
Adoption of New Accounting Standard						1,396,000
Charge-offs						(60,000)
Recoveries						0
Provisions (credits)						(43,000)
Allowance for credit losses, ending balance				2,007,000		2,007,000
Commercial Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Residential Construction Mortgage [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance						0
Adoption of New Accounting Standard						969,000
Charge-offs						0
Recoveries						0
Provisions (credits)						(97,000)
Allowance for credit losses, ending balance				872,000		872,000
Commercial Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Real Estate [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance	6,663,000		5,751,000	5,431,000	5,751,000	5,881,000
Adoption of New Accounting Standard						(1,744,000)
Charge-offs	(1,204,000)			0	(1,205,000)	0
Recoveries	0			24,000	19,000	95,000
Provisions (credits)	4,813,000			66,000	2,016,000	893,000
Allowance for credit losses, ending balance	6,581,000	6,663,000		5,054,000	6,581,000	5,054,000
Ending balance: related to loans individually evaluated for impairment	862,000			598,000	862,000	598,000
CECL ACL January 1, 2023	5,719,000			4,456,000	5,719,000	4,456,000
Loans receivables:
Loans receivables Ending balance				362,822,000		362,822,000
Ending balance: related to loans individually evaluated for impairment				11,525,000		11,525,000
Ending balance: collectively evaluated for impairment				351,297,000		351,297,000
Commercial Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Lines of Credit [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance	1,221,000		1,674,000	2,620,000	1,674,000	3,990,000
Adoption of New Accounting Standard						95,000
Charge-offs	(1,918,000)			(1,230,000)	(1,918,000)	(1,230,000)
Recoveries	0			0	0	1,000
Provisions (credits)	9,104,000			483,000	767,000	(983,000)
Allowance for credit losses, ending balance	523,000	1,221,000		1,873,000	523,000	1,873,000
Ending balance: related to loans individually evaluated for impairment	100,000			1,093,000	100,000	1,093,000
CECL ACL January 1, 2023	423,000			780,000	423,000	780,000
Loans receivables:
Loans receivables Ending balance				73,497,000		73,497,000
Ending balance: related to loans individually evaluated for impairment				2,052,000		2,052,000
Ending balance: collectively evaluated for impairment				71,445,000		71,445,000
Commercial Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Other Commercial and Industrial [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance	3,821,000		3,281,000	5,192,000	3,281,000	2,944,000
Adoption of New Accounting Standard						10,000
Charge-offs	(2,936,000)			(2,499,000)	(2,936,000)	(2,798,000)
Recoveries	5,000			5,000	12,000	132,000
Provisions (credits)	1,845,000			343,000	2,378,000	2,753,000
Allowance for credit losses, ending balance	2,735,000	3,821,000		3,041,000	2,735,000	3,041,000
Ending balance: related to loans individually evaluated for impairment	1,192,000			1,564,000	1,192,000	1,564,000
CECL ACL January 1, 2023	1,543,000			1,477,000	1,543,000	1,477,000
Loans receivables:
Loans receivables Ending balance				85,506,000		85,506,000
Ending balance: related to loans individually evaluated for impairment				6,759,000		6,759,000
Ending balance: collectively evaluated for impairment				78,747,000		78,747,000
Commercial Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Paycheck Protection Program [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance				0
Charge-offs				0
Recoveries				0
Allowance for credit losses, ending balance				0		0
Ending balance: related to loans individually evaluated for impairment				0		0
CECL ACL January 1, 2023				0		0
Loans receivables:
Loans receivables Ending balance				169,000		169,000
Ending balance: related to loans individually evaluated for impairment				0		0
Ending balance: collectively evaluated for impairment				169,000		169,000
Commercial Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Tax Exempt Loans [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance	2,000		1,000	15,000	1,000	3,000
Adoption of New Accounting Standard						14,000
Charge-offs	0			0	0	0
Recoveries				0	0	0
Provisions (credits)	(62,000)			31,000	0	(4,000)
Allowance for credit losses, ending balance	1,000	2,000		13,000	1,000	13,000
Ending balance: related to loans individually evaluated for impairment	0			0	0	0
CECL ACL January 1, 2023				13,000		13,000
Commercial Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Home Equity and Junior Liens [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance			657,000	682,000	657,000	741,000
Adoption of New Accounting Standard						(97,000)
Charge-offs				0	(51,000)	0
Recoveries				0	1,000	0
Provisions (credits)				238,000	139,000	78,000
Allowance for credit losses, ending balance	746,000			722,000	746,000	722,000
Ending balance: related to loans individually evaluated for impairment				147,000		147,000
CECL ACL January 1, 2023				575,000		575,000
Commercial Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Other Consumer [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance			$ 2,145,000	2,186,000	2,145,000	1,046,000
Adoption of New Accounting Standard						1,243,000
Charge-offs				(84,000)	(2,883,000)	(277,000)
Recoveries				17,000	111,000	24,000
Provisions (credits)				(401,000)	5,008,000	78,000
Allowance for credit losses, ending balance	4,381,000			2,185,000	4,381,000	2,185,000
Ending balance: related to loans individually evaluated for impairment				0		0
CECL ACL January 1, 2023				$ 2,185,000		$ 2,185,000
Consumer Portfolio Segment [Member]
Loans receivables:
Loans receivables Ending balance	923,231,000				923,231,000
Ending balance: related to loans individually evaluated for impairment	19,590,000				19,590,000
Ending balance: collectively evaluated for impairment	903,641,000				903,641,000
Consumer Portfolio Segment [Member] | Home Equity and Junior Liens [Member]
Loans receivables:
Loans receivables Ending balance	52,709,000				52,709,000
Ending balance: related to loans individually evaluated for impairment	591,000				591,000
Ending balance: collectively evaluated for impairment	52,118,000				52,118,000
Consumer Portfolio Segment [Member] | Other Consumer [Member]
Loans receivables:
Loans receivables Ending balance	76,703,000				76,703,000
Ending balance: related to loans individually evaluated for impairment	67,000				67,000
Ending balance: collectively evaluated for impairment	76,636,000				76,636,000
Consumer Portfolio Segment [Member] | Allowance For Credit Loss [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance	16,892,000
Charge-offs	(8,812,000)
Recoveries	90,000
Provisions (credits)	1,220,000
Allowance for credit losses, ending balance		16,892,000
Ending balance: related to loans individually evaluated for impairment	2,443,000				2,443,000
CECL ACL January 1, 2023	14,831,000				14,831,000
Consumer Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Tax Exempt Loans [Member]
Allowance for loan losses:
Recoveries	0
CECL ACL January 1, 2023	1,000				1,000
Consumer Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Home Equity and Junior Liens [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance	625,000
Charge-offs	(51,000)
Recoveries	0
Provisions (credits)	(5,000)
Allowance for credit losses, ending balance		625,000
Ending balance: related to loans individually evaluated for impairment	180,000				180,000
CECL ACL January 1, 2023	566,000				566,000
Consumer Portfolio Segment [Member] | Allowance For Credit Loss [Member] | Other Consumer [Member]
Allowance for loan losses:
Allowance for credit losses, beginning balance	2,209,000
Charge-offs	(2,703,000)
Recoveries	62,000
Provisions (credits)	1,122,000
Allowance for credit losses, ending balance		$ 2,209,000
Ending balance: related to loans individually evaluated for impairment	67,000				67,000
CECL ACL January 1, 2023	$ 4,314,000				$ 4,314,000