Note 5 - Purchased Credit Deteriorated Loans - Accretable Discount on Credit Deteriorated Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Accretable discount, beginning of period	$ 1,467	$ 0
Less loans transferred to held-for-sale	396	0
Less accretion	211	19
Accretable discount, end of year	1,113	1,467
Cincinnati Bancorp, Inc. [Member]
Accretable discount acquired during period	0	1,486
Eagle Financial Bancorp, Inc. [Member]
Accretable discount acquired during period	$ 253	$ 0