Note 4 - Loans Receivable, Net - Accrued Interest Writeoff (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Accrued Interest, Writeoff	$ 41	$ 34
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Accrued Interest, Writeoff	1	22
Commercial Real Estate Portfolio Segment [Member] | Residential Mortgage [Member]
Accrued Interest, Writeoff	26	7
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Accrued Interest, Writeoff	5	1
Commercial and Agricultural Loans [Member]
Accrued Interest, Writeoff	5	1
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member]
Accrued Interest, Writeoff	$ 4	$ 3