Note 5 - Allowance for Loan Losses on Loans and Nonperforming Assets - Past Due and Nonaccrual Loans (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Nonaccruals, no allowance		$ 2,177
Nonaccruals, with allowance		452
Nonaccruals		2,629	$ 2,847
Loans, gross		857,175	853,193
Loans 90 or more days past due and accruing		188	8
Gross loans		857,175	853,193
Financial Asset, Not Past Due [Member]
Loans, gross		852,712	848,950
Gross loans		852,712	848,950
Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross	[1]	1,646	1,388
Gross loans	[1]	1,646	1,388
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		419	351
Gross loans		419	351
Consumer Real Estate Portfolio Segment [Member]
Loans, gross		241,564	221,052
Gross loans		241,564	221,052
Real Estate Construction Portfolio Segment[Member]
Loans, gross		55,379	54,579
Gross loans		55,379	54,579
Commercial Real Estate Portfolio Segment [Member]
Loans, gross		419,130	437,888
Gross loans		419,130	437,888
Commercial Non Real Estate Segment [Member]
Loans, gross		41,555	57,652
Gross loans		41,555	57,652
Public Sector and IDA Portfolio Segment[Member]
Nonaccruals		0	0
Loans, gross		60,551	48,074
Loans 90 or more days past due and accruing		0	0
Gross loans		60,551	48,074
Public Sector and IDA Portfolio Segment[Member] | Financial Asset, Not Past Due [Member]
Loans, gross		60,551	48,074
Gross loans		60,551	48,074
Public Sector and IDA Portfolio Segment[Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross		0	0
Gross loans		0	0
Public Sector and IDA Portfolio Segment[Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		0	0
Gross loans		0	0
Consumer Non Real Estate Portfolio Segment [Member]
Loans, gross		38,996	33,948
Gross loans		38,996	33,948
Closed End First Liens [Member] | Consumer Real Estate Portfolio Segment [Member]
Nonaccruals, no allowance		0
Nonaccruals, with allowance		0
Nonaccruals		0	91
Loans, gross		125,679	122,648
Loans 90 or more days past due and accruing		131	0
Gross loans		125,679	122,648
Closed End First Liens [Member] | Consumer Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans, gross		124,886	121,807
Gross loans		124,886	121,807
Closed End First Liens [Member] | Consumer Real Estate Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross	[1]	662	750
Gross loans	[1]	662	750
Closed End First Liens [Member] | Consumer Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		131	91
Gross loans		131	91
Construction, 1-4 Family Residential [Member] | Real Estate Construction Portfolio Segment[Member]
Nonaccruals		0	0
Loans, gross		13,442	12,538
Loans 90 or more days past due and accruing		0	0
Gross loans		13,442	12,538
Construction, 1-4 Family Residential [Member] | Real Estate Construction Portfolio Segment[Member] | Financial Asset, Not Past Due [Member]
Loans, gross		13,442	12,538
Gross loans		13,442	12,538
Construction, 1-4 Family Residential [Member] | Real Estate Construction Portfolio Segment[Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross		0	0
Gross loans		0	0
Construction, 1-4 Family Residential [Member] | Real Estate Construction Portfolio Segment[Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		0	0
Gross loans		0	0
Commercial Real Estate, Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Nonaccruals, no allowance		2,177
Nonaccruals, with allowance		231
Nonaccruals		2,408	2,493
Loans, gross		117,221	129,133
Loans 90 or more days past due and accruing		0	0
Gross loans		117,221	129,133
Commercial Real Estate, Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans, gross		114,477	126,640
Gross loans		114,477	126,640
Commercial Real Estate, Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross	[1]	336	0
Gross loans	[1]	336	0
Commercial Real Estate, Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		231	252
Gross loans		231	252
Construction, Other [Member] | Real Estate Construction Portfolio Segment[Member]
Nonaccruals		0	0
Loans, gross		41,937	42,041
Loans 90 or more days past due and accruing		0	0
Gross loans		41,937	42,041
Construction, Other [Member] | Real Estate Construction Portfolio Segment[Member] | Financial Asset, Not Past Due [Member]
Loans, gross		41,916	42,041
Gross loans		41,916	42,041
Construction, Other [Member] | Real Estate Construction Portfolio Segment[Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross	[1]	21	0
Gross loans	[1]	21	0
Construction, Other [Member] | Real Estate Construction Portfolio Segment[Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		0	0
Gross loans		0	0
Commercial and Industrial [Member] | Commercial Non Real Estate Segment [Member]
Nonaccruals, no allowance		0
Nonaccruals, with allowance		221
Nonaccruals		221	263
Loans, gross		41,555	57,652
Loans 90 or more days past due and accruing		28	0
Gross loans		41,555	57,652
Commercial and Industrial [Member] | Commercial Non Real Estate Segment [Member] | Financial Asset, Not Past Due [Member]
Loans, gross		41,249	57,373
Gross loans		41,249	57,373
Commercial and Industrial [Member] | Commercial Non Real Estate Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross	[1]	57	16
Gross loans	[1]	57	16
Commercial and Industrial [Member] | Commercial Non Real Estate Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		28	0
Gross loans		28	0
Equity Lines [Member] | Consumer Real Estate Portfolio Segment [Member]
Nonaccruals		0	0
Loans, gross		17,282	15,026
Loans 90 or more days past due and accruing		0	0
Gross loans		17,282	15,026
Equity Lines [Member] | Consumer Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans, gross		17,178	15,010
Gross loans		17,178	15,010
Equity Lines [Member] | Consumer Real Estate Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross		104	16
Gross loans		104	16
Equity Lines [Member] | Consumer Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		0	0
Gross loans		0	0
Equity Lines [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, gross		17,282
Gross loans		17,282
Closed End Junior Liens [Member] | Consumer Real Estate Portfolio Segment [Member]
Nonaccruals		0	0
Loans, gross		5,039	2,446
Loans 90 or more days past due and accruing		0	0
Gross loans		5,039	2,446
Closed End Junior Liens [Member] | Consumer Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans, gross		5,027	2,446
Gross loans		5,027	2,446
Closed End Junior Liens [Member] | Consumer Real Estate Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross		12	0
Gross loans		12	0
Closed End Junior Liens [Member] | Consumer Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		0	0
Gross loans		0	0
Investor Owned Residential Real Estate [Member] | Consumer Real Estate Portfolio Segment [Member]
Nonaccruals		0	0
Loans, gross		93,564	80,932
Loans 90 or more days past due and accruing		0	0
Gross loans		93,564	80,932
Investor Owned Residential Real Estate [Member] | Consumer Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans, gross		93,564	80,524
Gross loans		93,564	80,524
Investor Owned Residential Real Estate [Member] | Consumer Real Estate Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross	[1]	0	408
Gross loans	[1]	0	408
Investor Owned Residential Real Estate [Member] | Consumer Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		0	0
Gross loans		0	0
Multifamily Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member]
Nonaccruals		0	0
Loans, gross		119,247	127,312
Loans 90 or more days past due and accruing		0	0
Gross loans		119,247	127,312
Multifamily Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans, gross		119,052	127,312
Gross loans		119,052	127,312
Multifamily Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross		195	0
Gross loans		195	0
Multifamily Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		0	0
Gross loans		0	0
Commercial Real Estate Other [Member] | Commercial Real Estate Portfolio Segment [Member]
Nonaccruals		0	0
Loans, gross		182,662	181,443
Loans 90 or more days past due and accruing		0	0
Gross loans		182,662	181,443
Commercial Real Estate Other [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans, gross		182,662	181,443
Gross loans		182,662	181,443
Commercial Real Estate Other [Member] | Commercial Real Estate Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross		0	0
Gross loans		0	0
Commercial Real Estate Other [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		0	0
Gross loans		0	0
Credit Card Receivable [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Nonaccruals		0	0
Loans, gross		4,668	4,597
Loans 90 or more days past due and accruing		3	2
Gross loans		4,668	4,597
Credit Card Receivable [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans, gross		4,648	4,592
Gross loans		4,648	4,592
Credit Card Receivable [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross	[1]	17	3
Gross loans	[1]	17	3
Credit Card Receivable [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		3	2
Gross loans		3	2
Automobile Loan [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Nonaccruals		0	0
Loans, gross		12,261	9,935
Loans 90 or more days past due and accruing		0	0
Gross loans		12,261	9,935
Automobile Loan [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans, gross		12,126	9,833
Gross loans		12,126	9,833
Automobile Loan [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross	[1]	135	102
Gross loans	[1]	135	102
Automobile Loan [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		0	0
Gross loans		0	0
Other Consumer Loans [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Nonaccruals		0	0
Loans, gross		22,067	19,416
Loans 90 or more days past due and accruing		26	6
Gross loans		22,067	19,416
Other Consumer Loans [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans, gross		21,934	19,317
Gross loans		21,934	19,317
Other Consumer Loans [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans, gross	[1]	107	93
Gross loans	[1]	107	93
Other Consumer Loans [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, gross		26	6
Gross loans		$ 26	$ 6

[1] Includes accruing and nonaccrual loans past due 90 days or more.