Note 3 - Loans and Allowance for Credit Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Balance		$ 10,262	$ 9,094	$ 9,094
Charge-offs		(112)	(109)	(519)
Recoveries		63	65	270
Provision for (recovery of) credit losses		277	5	1,242
Merger adjustment	[1]			175
Balance		10,490	9,055	10,262
Real Estate Construction Portfolio Segment [Member]
Balance		348	408	408
Charge-offs		0	0	0
Recoveries		0	0	0
Provision for (recovery of) credit losses		(18)	(59)	(70)
Merger adjustment	[1]			10
Balance		330	349	348
Consumer Real Estate Portfolio Segment [Member]
Balance		3,926	3,162	3,162
Charge-offs		(3)	0	0
Recoveries		0	0	0
Provision for (recovery of) credit losses		(32)	(194)	667
Merger adjustment	[1]			97
Balance		3,891	2,968	3,926
Commercial Real Estate Portfolio Segment [Member]
Balance		4,299	3,576	3,576
Charge-offs		0	0	0
Recoveries		8	16	53
Provision for (recovery of) credit losses		284	264	615
Merger adjustment	[1]			55
Balance		4,591	3,856	4,299
Commercial Non Real Estate Segment [Member]
Balance		655	682	682
Charge-offs		0	0	(166)
Recoveries		30	2	79
Provision for (recovery of) credit losses		(22)	(37)	56
Merger adjustment	[1]			4
Balance		663	647	655
Public Sector and IDA Portfolio Segment [Member]
Balance		336	333	333
Charge-offs		0	0	0
Recoveries		0	0	0
Provision for (recovery of) credit losses		15	(12)	3
Merger adjustment	[1]			0
Balance		351	321	336
Consumer Non Real Estate Portfolio Segment [Member]
Balance		648	583	583
Charge-offs		(109)	(109)	(353)
Recoveries		25	47	138
Provision for (recovery of) credit losses		65	12	271
Merger adjustment	[1]			9
Balance		629	533	648
Unallocated Financing Receivables [Member]
Balance		50	350	350
Charge-offs		0	0	0
Recoveries		0	0	0
Provision for (recovery of) credit losses		(15)	31	(300)
Merger adjustment	[1]			0
Balance		$ 35	$ 381	$ 50

[1] Adjustment for PCD acquired loans.