Note 4 - Loans Receivable, Net - Accrued Interest Writeoff (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Accrued Interest, Writeoff	$ 34
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Accrued Interest, Writeoff	22
Commercial Real Estate Portfolio Segment [Member] | Residential Mortgage [Member]
Accrued Interest, Writeoff	7
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Accrued Interest, Writeoff	1
Commercial and Agricultural Loans [Member]
Accrued Interest, Writeoff	1
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member]
Accrued Interest, Writeoff	0
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member]
Accrued Interest, Writeoff	$ 3