Note 3 - Loans Receivable - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Loans, individually evaluated	$ 37,900	$ 25,900
Single Family Residence [Member]
Loans, individually evaluated	5,304	5,056
Condominium [Member]
Loans, individually evaluated	16,948	5,146
Multifamily [Member]
Loans, individually evaluated	4,533	4,531
Office Building [Member]
Loans, individually evaluated	6,158	6,306
Gas Station [Member]
Loans, individually evaluated	3,435	3,435
Automobiles [Member]
Loans, individually evaluated	302
Business Assets [Member]
Loans, individually evaluated	799	1,108
Collateral Pledged [Member]
Loans, individually evaluated	37,479	25,582
Real Estate Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Single Family Residence [Member]
Loans, individually evaluated	2,433	2,181
Real Estate Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Condominium [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Multifamily [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Office Building [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Gas Station [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Automobiles [Member]
Loans, individually evaluated	0
Real Estate Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Business Assets [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Collateral Pledged [Member]
Loans, individually evaluated	2,433	2,181
Real Estate Portfolio Segment [Member] \| Multi-family Loan [Member] \| Single Family Residence [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| Multi-family Loan [Member] \| Condominium [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| Multi-family Loan [Member] \| Multifamily [Member]
Loans, individually evaluated	4,533	4,531
Real Estate Portfolio Segment [Member] \| Multi-family Loan [Member] \| Office Building [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| Multi-family Loan [Member] \| Gas Station [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| Multi-family Loan [Member] \| Automobiles [Member]
Loans, individually evaluated	0
Real Estate Portfolio Segment [Member] \| Multi-family Loan [Member] \| Business Assets [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| Multi-family Loan [Member] \| Collateral Pledged [Member]
Loans, individually evaluated	4,533	4,531
Real Estate Portfolio Segment [Member] \| Commercial Real Estate [Member] \| Single Family Residence [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| Commercial Real Estate [Member] \| Condominium [Member]
Loans, individually evaluated	12,781	0
Real Estate Portfolio Segment [Member] \| Commercial Real Estate [Member] \| Multifamily [Member]
Loans, individually evaluated	0
Real Estate Portfolio Segment [Member] \| Commercial Real Estate [Member] \| Office Building [Member]
Loans, individually evaluated	6,158	6,306
Real Estate Portfolio Segment [Member] \| Commercial Real Estate [Member] \| Gas Station [Member]
Loans, individually evaluated	3,435	3,435
Real Estate Portfolio Segment [Member] \| Commercial Real Estate [Member] \| Automobiles [Member]
Loans, individually evaluated	0
Real Estate Portfolio Segment [Member] \| Commercial Real Estate [Member] \| Business Assets [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| Commercial Real Estate [Member] \| Collateral Pledged [Member]
Loans, individually evaluated	22,374	9,741
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Single Family Residence [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Condominium [Member]
Loans, individually evaluated	4,160	5,139
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Multifamily [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Office Building [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Gas Station [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Automobiles [Member]
Loans, individually evaluated	0
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Business Assets [Member]
Loans, individually evaluated	0	0
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Collateral Pledged [Member]
Loans, individually evaluated	4,160	5,139
Real Estate Portfolio Segment [Member] \| Automobile and Other Loan [Member] \| Single Family Residence [Member]
Loans, individually evaluated	0
Real Estate Portfolio Segment [Member] \| Automobile and Other Loan [Member] \| Condominium [Member]
Loans, individually evaluated	0
Real Estate Portfolio Segment [Member] \| Automobile and Other Loan [Member] \| Multifamily [Member]
Loans, individually evaluated	0
Real Estate Portfolio Segment [Member] \| Automobile and Other Loan [Member] \| Office Building [Member]
Loans, individually evaluated	0
Real Estate Portfolio Segment [Member] \| Automobile and Other Loan [Member] \| Gas Station [Member]
Loans, individually evaluated	0
Real Estate Portfolio Segment [Member] \| Automobile and Other Loan [Member] \| Automobiles [Member]
Loans, individually evaluated	302
Real Estate Portfolio Segment [Member] \| Automobile and Other Loan [Member] \| Business Assets [Member]
Loans, individually evaluated	0
Real Estate Portfolio Segment [Member] \| Automobile and Other Loan [Member] \| Collateral Pledged [Member]
Loans, individually evaluated	302
Commercial Portfolio Segment [Member] \| Single Family Residence [Member]
Loans, individually evaluated	2,871	2,875
Commercial Portfolio Segment [Member] \| Condominium [Member]
Loans, individually evaluated	7	7
Commercial Portfolio Segment [Member] \| Multifamily [Member]
Loans, individually evaluated	0	0
Commercial Portfolio Segment [Member] \| Office Building [Member]
Loans, individually evaluated	0	0
Commercial Portfolio Segment [Member] \| Gas Station [Member]
Loans, individually evaluated	0	0
Commercial Portfolio Segment [Member] \| Automobiles [Member]
Loans, individually evaluated	0
Commercial Portfolio Segment [Member] \| Business Assets [Member]
Loans, individually evaluated	799	1,108
Commercial Portfolio Segment [Member] \| Collateral Pledged [Member]
Loans, individually evaluated	$ 3,677	$ 3,990

Note 3 - Loans Receivable - Collateral Dependent Loans (Details) - USD ($)
$ in Thousands

Mar. 31, 2026

Dec. 31, 2025

Loans, individually evaluated

$ 37,900

$ 25,900

Single Family Residence [Member]

Loans, individually evaluated

5,304

5,056

Condominium [Member]

Loans, individually evaluated