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Note 7 - Loans Receivable and Credit Disclosures (Details Textual) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) | $ 40 |  | $ 23 |  |  |
Financing Receivable, Nonaccrual | 11,300 |  | $ 11,300 |  | $ 11,300 | $ 14,700
Financing Receivable, Modified, Number of Contracts |  |  | 3 |  |  |
Financing Receivable, Modified, Subsequent Default, Number of Contracts |  |  | 0 |  | 0 |
Financing Receivable, Modified, Accumulated |  |  |  |  |  | $ 10,700
Number Of Restructured Loans Granting Concessions |  |  | 0 |  |  |
Financing Receivable, Modified, Increase (Decrease) from Modification |  |  | $ 0 |  |  |
Foregone Interest on Real Estate Loan [Member] |  |  |  |  |  |
Financing Receivable, Nonaccrual, Interest Income | $ 166 | $ 168 | $ 345 | $ 311 |  |

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