Note 2 - Loans Receivable - Past Due (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Loans receivable, before allowance and fee	$ 30,967	$ 30,666
Loans receivable, Past due greater than 90 days accruing	0	0
Financial Asset, 30 to 90 Days Past Due [Member]
Loans receivable, before allowance and fee	266	354
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable, before allowance and fee	73	0
Financial Asset, Not Past Due [Member]
Loans receivable, before allowance and fee	30,628	30,312
Real Estate Loan [Member]
Loans receivable, before allowance and fee	30,746	30,371
Share Loans [Member]
Loans receivable, before allowance and fee	221	295
Loans receivable, Past due greater than 90 days accruing	0	0
Share Loans [Member] \| Financial Asset, 30 to 90 Days Past Due [Member]
Loans receivable, before allowance and fee	0	0
Share Loans [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable, before allowance and fee	0	0
Share Loans [Member] \| Financial Asset, Not Past Due [Member]
Loans receivable, before allowance and fee	221	295
Residential Portfolio Segment [Member] \| Real Estate Loan [Member]
Loans receivable, before allowance and fee	29,821	29,774
Loans receivable, Past due greater than 90 days accruing	0	0
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, 30 to 90 Days Past Due [Member]
Loans receivable, before allowance and fee	266	354
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable, before allowance and fee	73	0
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, Not Past Due [Member]
Loans receivable, before allowance and fee	29,482	29,420
Construction Portfolio Segment [Member] \| Real Estate Loan [Member]
Loans receivable, before allowance and fee	386	0
Loans receivable, Past due greater than 90 days accruing	0	0
Construction Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, 30 to 90 Days Past Due [Member]
Loans receivable, before allowance and fee	0	0
Construction Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable, before allowance and fee	0	0
Construction Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, Not Past Due [Member]
Loans receivable, before allowance and fee	386	0
Commercial Real Estate Portfolio Segment [Member]
Loans receivable, before allowance and fee	539	597
Commercial Real Estate Portfolio Segment [Member] \| Real Estate Loan [Member]
Loans receivable, before allowance and fee	539	597
Loans receivable, Past due greater than 90 days accruing	0	0
Commercial Real Estate Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, 30 to 90 Days Past Due [Member]
Loans receivable, before allowance and fee	0	0
Commercial Real Estate Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans receivable, before allowance and fee	0	0
Commercial Real Estate Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, Not Past Due [Member]
Loans receivable, before allowance and fee	$ 539	$ 597

Note 2 - Loans Receivable - Past Due (Details) - USD ($)
$ in Thousands

Jun. 30, 2025

Dec. 31, 2024

Loans receivable, before allowance and fee

$ 30,967

$ 30,666

Loans receivable, Past due greater than 90 days accruing

Financial Asset, 30 to 90 Days Past Due [Member]

Loans receivable, before allowance and fee

266

354

Financial Asset, Equal to or Greater than 90 Days Past Due [Member]