Note 3 - Loans Receivable - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Loans, individually evaluated	$ 23,200	$ 25,900
Single Family Residence [Member]
Loans, individually evaluated	4,464	5,056
Condominium [Member]
Loans, individually evaluated	3,595	5,146
Multifamily [Member]
Loans, individually evaluated	4,530	4,531
Office Building [Member]
Loans, individually evaluated	5,929	6,306
Gas Station [Member]
Loans, individually evaluated	3,231	3,435
Automobiles [Member]
Loans, individually evaluated	594
Business Assets [Member]
Loans, individually evaluated	22,343	1,108
Collateral Pledged [Member]
Loans, individually evaluated		25,582
Real Estate Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Single Family Residence [Member]
Loans, individually evaluated	1,493	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	1,493	0
Real Estate Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Collateral Pledged [Member]
Loans, individually evaluated		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	4,530	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	4,530	0
Real Estate Portfolio Segment [Member] \| Multi-family Loan [Member] \| Collateral Pledged [Member]
Loans, individually evaluated		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	0	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	5,929	6,306
Real Estate Portfolio Segment [Member] \| Commercial Real Estate [Member] \| Gas Station [Member]
Loans, individually evaluated	3,231	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	9,160	0
Real Estate Portfolio Segment [Member] \| Commercial Real Estate [Member] \| Collateral Pledged [Member]
Loans, individually evaluated		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	3,595	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	3,595	0
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Collateral Pledged [Member]
Loans, individually evaluated		5,139
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member] \| Single Family Residence [Member]
Loans, individually evaluated	105
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member] \| Condominium [Member]
Loans, individually evaluated	0
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member] \| Multifamily [Member]
Loans, individually evaluated	0
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member] \| Office Building [Member]
Loans, individually evaluated	0
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member] \| Gas Station [Member]
Loans, individually evaluated	0
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member] \| Automobiles [Member]
Loans, individually evaluated	0
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member] \| Business Assets [Member]
Loans, individually evaluated	105
Commercial Portfolio Segment [Member] \| Single Family Residence [Member]
Loans, individually evaluated	2,866	2,875
Commercial Portfolio Segment [Member] \| Condominium [Member]
Loans, individually evaluated	0	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	594
Commercial Portfolio Segment [Member] \| Business Assets [Member]
Loans, individually evaluated	$ 3,460	1,108
Commercial Portfolio Segment [Member] \| Collateral Pledged [Member]
Loans, individually evaluated		$ 3,990

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

Sep. 30, 2026

Dec. 31, 2025

Loans, individually evaluated

$ 23,200

$ 25,900

Single Family Residence [Member]

Loans, individually evaluated

4,464

5,056

Condominium [Member]

Loans, individually evaluated