Note 4 - Loans, Allowance for Credit Losses and Other Real Estate Owned - Credit Risk Profile by Internally Assigned Grade (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Loans	$ 771,030	$ 820,300
Commercial Portfolio Segment [Member]
Loans	111,888	127,276
Commercial Real Estate Portfolio Segment [Member]
Loans	489,612	507,900
Construction Portfolio Segment [Member]
Loans	5,064	5,064	$ 5,064
Residential Portfolio Segment [Member]
Loans	8,061	8,274
Consumer Portfolio Segment [Member]
Loans	156,405	171,786	171,786
Pass [Member]
Loans	749,161	789,715
Pass [Member] \| Commercial Portfolio Segment [Member]
Loans	107,630	122,958
Pass [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	479,473	489,522
Pass [Member] \| Construction Portfolio Segment [Member]
Loans	0	0	0
Pass [Member] \| Residential Portfolio Segment [Member]
Loans	7,779	7,984
Pass [Member] \| Consumer Portfolio Segment [Member]
Loans	154,279	169,251
Substandard [Member]
Loans	21,460	29,867
Substandard [Member] \| Commercial Portfolio Segment [Member]
Loans	4,258	4,318
Substandard [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	10,139	18,378
Substandard [Member] \| Construction Portfolio Segment [Member]
Loans	5,064	5,064	5,064
Substandard [Member] \| Residential Portfolio Segment [Member]
Loans	282	290
Substandard [Member] \| Consumer Portfolio Segment [Member]
Loans	1,717	1,817
Doubtful [Member]
Loans	99	192
Doubtful [Member] \| Commercial Portfolio Segment [Member]
Loans	0	0
Doubtful [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	0	0
Doubtful [Member] \| Construction Portfolio Segment [Member]
Loans	0	0	0
Doubtful [Member] \| Residential Portfolio Segment [Member]
Loans	0	0
Doubtful [Member] \| Consumer Portfolio Segment [Member]
Loans	99	192
Unlikely to be Collected Financing Receivable [Member]
Loans	310	526
Unlikely to be Collected Financing Receivable [Member] \| Commercial Portfolio Segment [Member]
Loans	0	0
Unlikely to be Collected Financing Receivable [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	0	0
Unlikely to be Collected Financing Receivable [Member] \| Construction Portfolio Segment [Member]
Loans	0	0	$ 0
Unlikely to be Collected Financing Receivable [Member] \| Residential Portfolio Segment [Member]
Loans	0	0
Unlikely to be Collected Financing Receivable [Member] \| Consumer Portfolio Segment [Member]
Loans	$ 310	$ 526