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Note 4 - Loans Receivable - Loans Receivable (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | --- | --- | --- | --- | ---
Loans receivable | $ 931,838 |  | $ 1,059,106 |  |  |
Allowance for credit losses | (7,899) | $ (8,142) | (8,345) | $ (8,559) | $ (9,226) | $ (8,129)
Loans, net | 923,939 |  | 1,050,761 |  |  |
Commercial Portfolio Segment [Member] |  |  |  |  |  |
Loans receivable | 280,218 |  | 393,321 |  |  |
Allowance for credit losses | (1,329) | (1,524) | (2,303) | (2,535) | (2,943) | (2,548)
Consumer Portfolio Segment [Member] |  |  |  |  |  |
Loans receivable | 1,847 |  | 1,364 |  |  |
Allowance for credit losses | (56) | (54) | (32) | (31) | (33) | (49)
One-to-Four Family Residential Real Estate [Member] | Real Estate Portfolio [Member] |  |  |  |  |  |
Loans receivable | 15,634 |  | 18,945 |  |  |
Allowance for credit losses | (294) | (324) | (295) | (296) | (326) | (281)
Multi-family Mortgage [Member] | Real Estate Portfolio [Member] |  |  |  |  |  |
Loans receivable | 524,340 |  | 527,460 |  |  |
Allowance for credit losses | (4,805) | (4,843) | (4,549) | (4,547) | (4,679) | (4,017)
Nonresidential Real Estate [Member] | Real Estate Portfolio [Member] |  |  |  |  |  |
Loans receivable | 109,799 |  | 118,016 |  |  |
Allowance for credit losses | $ (1,415) | $ (1,397) | $ (1,166) | $ (1,150) | $ (1,245) | $ (1,234)

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