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Note 4 - Loans Receivable - Allowance for Loan Losses and Loans Receivable (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | --- | --- | --- | --- | ---
Loan balances, individually evaluated for impairment | $ 20,978 |  | $ 22,049 |  |  |
Loan balances, collectively evaluated for impairment | 974,909 |  | 1,037,057 |  |  |
Loans receivable | 995,887 |  | 1,059,106 |  |  |
Allowance for loans individually evaluated | 0 |  | 0 |  |  |
Allowance for loans collectively evaluated | 8,142 |  | 8,345 |  |  |
Allowance for loan losses | 8,142 | $ 8,249 | 8,345 | $ 9,226 | $ 10,032 | $ 8,129
Real Estate Portfolio [Member] | One-to-Four Family Residential Real Estate [Member] |  |  |  |  |  |
Loan balances, individually evaluated for impairment | 57 |  | 67 |  |  |
Loan balances, collectively evaluated for impairment | 17,650 |  | 18,878 |  |  |
Loans receivable | 17,707 |  | 18,945 |  |  |
Allowance for loans individually evaluated | 0 |  | 0 |  |  |
Allowance for loans collectively evaluated | 324 |  | 295 |  |  |
Allowance for loan losses | 324 | 331 | 295 | 326 | 354 | 281
Real Estate Portfolio [Member] | Multi-family Mortgage [Member] |  |  |  |  |  |
Loan balances, individually evaluated for impairment | 0 |  | 0 |  |  |
Loan balances, collectively evaluated for impairment | 527,542 |  | 527,460 |  |  |
Loans receivable | 527,542 |  | 527,460 |  |  |
Allowance for loans individually evaluated | 0 |  | 0 |  |  |
Allowance for loans collectively evaluated | 4,843 |  | 4,549 |  |  |
Allowance for loan losses | 4,843 | 4,819 | 4,549 | 4,679 | 4,714 | 4,017
Real Estate Portfolio [Member] | Nonresidential Real Estate [Member] |  |  |  |  |  |
Loan balances, individually evaluated for impairment | 380 |  | 0 |  |  |
Loan balances, collectively evaluated for impairment | 109,255 |  | 118,016 |  |  |
Loans receivable | 109,635 |  | 118,016 |  |  |
Allowance for loans individually evaluated | 0 |  | 0 |  |  |
Allowance for loans collectively evaluated | 1,397 |  | 1,166 |  |  |
Allowance for loan losses | 1,397 | 1,444 | 1,166 | 1,245 | 1,347 | 1,234
Commercial Portfolio Segment [Member] |  |  |  |  |  |
Loan balances, individually evaluated for impairment | 20,541 |  | 21,982 |  |  |
Loan balances, collectively evaluated for impairment | 318,675 |  | 371,339 |  |  |
Loans receivable | 339,216 |  | 393,321 |  |  |
Allowance for loans individually evaluated | 0 |  | 0 |  |  |
Allowance for loans collectively evaluated | 1,524 |  | 2,303 |  |  |
Allowance for loan losses | 1,524 | 1,621 | 2,303 | 2,943 | 3,576 | 2,548
Consumer Portfolio Segment [Member] |  |  |  |  |  |
Loan balances, individually evaluated for impairment | 0 |  | 0 |  |  |
Loan balances, collectively evaluated for impairment | 1,787 |  | 1,364 |  |  |
Loans receivable | 1,787 |  | 1,364 |  |  |
Allowance for loans individually evaluated | 0 |  | 0 |  |  |
Allowance for loans collectively evaluated | 54 |  | 32 |  |  |
Allowance for loan losses | $ 54 | $ 34 | $ 32 | $ 33 | $ 41 | $ 49

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