Note 3 - Loans and Allowance for Credit Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands		9 Months Ended		12 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Balance		$ 9,094	$ 8,225	$ 8,225
Charge-offs		(411)	(232)	(478)
Recoveries		158	235	283
Recovery of credit losses		1,312	(389)	(1,278)
Merger adjustment(1)	[1]	175
Balance		10,328	10,181	9,094
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Balance			2,342	2,342
Real Estate Construction Portfolio Segment[Member]
Balance		408	450	450
Charge-offs		0	0	0
Recoveries		0	0	0
Recovery of credit losses		43	133	(21)
Merger adjustment(1)	[1]	10
Balance		461	562	408
Real Estate Construction Portfolio Segment[Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Balance			(21)	(21)
Consumer Real Estate Portfolio Segment [Member]
Balance		3,162	2,199	2,199
Charge-offs		0	(17)	(17)
Recoveries		0	103	103
Recovery of credit losses		697	(353)	(384)
Merger adjustment(1)	[1]	97
Balance		3,956	3,193	3,162
Consumer Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Balance			1,261	1,261
Commercial Real Estate Portfolio Segment [Member]
Balance		3,576	3,642	3,642
Charge-offs		0	0	0
Recoveries		41	37	45
Recovery of credit losses		589	(212)	(811)
Merger adjustment(1)	[1]	55
Balance		4,261	4,167	3,576
Commercial Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Balance			700	700
Commercial Non Real Estate Segment [Member]
Balance		682	930	930
Charge-offs		(145)	(11)	(214)
Recoveries		12	4	6
Recovery of credit losses		106	(300)	(256)
Merger adjustment(1)	[1]	4
Balance		659	839	682
Commercial Non Real Estate Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Balance			216	216
Public Sector and IDA Portfolio Segment[Member]
Balance		333	319	319
Charge-offs		0	0	0
Recoveries		0	0	0
Recovery of credit losses		5	10	29
Merger adjustment(1)	[1]	0
Balance		338	314	333
Public Sector and IDA Portfolio Segment[Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Balance			(15)	(15)
Consumer Non Real Estate Portfolio Segment [Member]
Balance		583	506	506
Charge-offs		(266)	(204)	(247)
Recoveries		105	91	129
Recovery of credit losses		139	156	123
Merger adjustment(1)	[1]	9
Balance		570	621	583
Consumer Non Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Balance			72	72
Unallocated Financing Receivables [Member]
Balance		350	179	179
Charge-offs		0	0	0
Recoveries		0	0	0
Recovery of credit losses		(267)	177	42
Merger adjustment(1)	[1]	0
Balance		$ 83	485	350
Unallocated Financing Receivables [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Balance			$ 129	$ 129

[1] Adjustment for PCD acquired loans.