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Note 4 - Loans Receivable - Allowance for Loan Losses and Loans Receivable (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | --- | --- | ---
Loan balances, individually evaluated for impairment | $ 24,224 |  | $ 2,712 |  |  |
Loan balances, collectively evaluated for impairment | 1,155,769 |  | 1,232,160 |  |  |
Loans receivable | 1,179,993 |  | 1,234,872 |  |  |
Allowance for loan losses, individually evaluated for impairment | 0 |  | 0 |  |  |
Allowance for loan losses, collectively evaluated for impairment | 9,226 |  | 8,129 |  |  |
Allowance for loan losses | 9,226 | $ 10,032 | 8,129 | $ 7,202 | $ 6,786 | $ 6,715
Real Estate Portfolio [Member] | One-to-Four Family Residential Real Estate [Member] |  |  |  |  |  |
Loan balances, individually evaluated for impairment | 78 |  | 752 |  |  |
Loan balances, collectively evaluated for impairment | 20,370 |  | 22,381 |  |  |
Loans receivable | 20,448 |  | 23,133 |  |  |
Allowance for loan losses, individually evaluated for impairment | 0 |  | 0 |  |  |
Allowance for loan losses, collectively evaluated for impairment | 326 |  | 281 |  |  |
Allowance for loan losses | 326 | 354 | 281 | 286 | 315 | 331
Real Estate Portfolio [Member] | Multi-family Mortgage [Member] |  |  |  |  |  |
Loan balances, individually evaluated for impairment | 148 |  | 473 |  |  |
Loan balances, collectively evaluated for impairment | 542,017 |  | 536,921 |  |  |
Loans receivable | 542,165 |  | 537,394 |  |  |
Allowance for loan losses, individually evaluated for impairment | 0 |  | 0 |  |  |
Allowance for loan losses, collectively evaluated for impairment | 4,679 |  | 4,017 |  |  |
Allowance for loan losses | 4,679 | 4,714 | 4,017 | 3,632 | 3,390 | 3,377
Real Estate Portfolio [Member] | Nonresidential Real Estate [Member] |  |  |  |  |  |
Loan balances, individually evaluated for impairment | 0 |  | 0 |  |  |
Loan balances, collectively evaluated for impairment | 120,505 |  | 119,705 |  |  |
Loans receivable | 120,505 |  | 119,705 |  |  |
Allowance for loan losses, individually evaluated for impairment | 0 |  | 0 |  |  |
Allowance for loan losses, collectively evaluated for impairment | 1,245 |  | 1,234 |  |  |
Allowance for loan losses | 1,245 | 1,347 | 1,234 | 1,093 | 957 | 1,311
Commercial Portfolio Segment [Member] |  |  |  |  |  |
Loan balances, individually evaluated for impairment | 23,998 |  | 1,487 |  |  |
Loan balances, collectively evaluated for impairment | 471,522 |  | 551,569 |  |  |
Loans receivable | 495,520 |  | 553,056 |  |  |
Allowance for loan losses, individually evaluated for impairment | 0 |  | 0 |  |  |
Allowance for loan losses, collectively evaluated for impairment | 2,943 |  | 2,548 |  |  |
Allowance for loan losses | 2,943 | 3,576 | 2,548 | 2,149 | 2,078 | 1,652
Consumer Portfolio Segment [Member] |  |  |  |  |  |
Loan balances, individually evaluated for impairment | 0 |  | 0 |  |  |
Loan balances, collectively evaluated for impairment | 1,355 |  | 1,584 |  |  |
Loans receivable | 1,355 |  | 1,584 |  |  |
Allowance for loan losses, individually evaluated for impairment | 0 |  | 0 |  |  |
Allowance for loan losses, collectively evaluated for impairment | 33 |  | 49 |  |  |
Allowance for loan losses | $ 33 | $ 41 | $ 49 | $ 42 | $ 46 | $ 44

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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References No definition available. + Details
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