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Note 4 - Loans Receivable - Recorded Investment in Nonaccrual Loans (Details) - USD ($) | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Recorded investment | $ 22,331,000 | $ 21,331,000
Loans past due over 90 days, still accruing | 0 | 1,007,000
Real Estate Portfolio [Member] | One-to-Four Family Residential Real Estate [Member] |  |
Recorded investment | 34,000 | 37,000
Loans past due over 90 days, still accruing | 0 | 0
Real Estate Portfolio [Member] | Multi-family Mortgage [Member] |  |
Recorded investment | 1,458 |
Loans past due over 90 days, still accruing | 0 |
Real Estate Portfolio [Member] | Nonresidential Real Estate [Member] |  |
Recorded investment | 393,000 |
Loans past due over 90 days, still accruing | 0 |
Commercial Portfolio Segment [Member] |  |
Recorded investment | 20,446,000 | 21,294,000
Loans past due over 90 days, still accruing | $ 0 | $ 1,007,000

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