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Note 7 - Loans Receivable and Credit Disclosures (Details Textual) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) | $ 69 |  | $ 46 |  |  |
Financing Receivable, Nonaccrual, Interest Income | 224 | $ 224 | 569 | $ 535 |  |
Financing Receivable, Nonaccrual | $ 14,600 |  | $ 14,600 |  | $ 14,600 | $ 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 |  | 0 |  |  |
Financing Receivable, Modified, Increase (Decrease) from Modification |  | $ 0 |  | $ 0 |  |

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- Definition Accumulated amortized cost of financing receivable modified for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-42 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 33 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-33 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 310 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481746/310-40-50-4 + Details
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