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Note 15 - Commitments and Contingent Liabilities (Details Textual) | 12 Months Ended
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Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Investment, Proportional Amortization Method, Elected, Amount | $ 1,800,000 | $ 2,000,000
Investment Program, Proportional Amortization Method, Applied, Amortization Expense | 127,000 | 35,000
Investment Program, Proportional Amortization Method, Elected, Commitment | 1,500,000 | 1,700,000
Insurance Policy, Aggregate Limit | 3,000,000 |
Insurance Policy, Deductible | $ 50,000 |
Number of Branch Locations by Utilized Leases | 6 |
Lease, Right-of-Use Asset, Net | $ 3,600,000 |
Finance Lease, Right-of-Use Asset, after Accumulated Amortization | 3,200,000 | 3,500,000
Operating Lease, Right-of-Use Asset | 400,000 | $ 560,000
Finance Lease, Liability | 3,412,000 |
Operating Lease, Liability | $ 406,000 |
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] |  | Other Noninterest Expense
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration] |  | Depreciation, Amortization and Accretion, Net
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration] | Interest Receivable and Other Assets | Interest Receivable and Other Assets
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Interest Receivable and Other Assets | Interest Receivable and Other Assets
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Other Borrowings |
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Accrued Liabilities and Other Liabilities |
Minimum [Member] |  |
Lessee, Operating Lease, Remaining Lease Term (Year) | 2 years |
Maximum [Member] |  |
Lessee, Operating Lease, Remaining Lease Term (Year) | 17 years |

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- Definition Amount of investment that generates income tax credit and other income tax benefit under tax credit program elected to be accounted for using proportional amortization method. Includes, but is not limited to, investment under program not meeting condition for accounting under proportional amortization method. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478156/740-323-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478156/740-323-50-1A + Details
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- Definition Amount of amortization expense for investment that generates income tax credit and other income tax benefit under tax credit program accounted for using proportional amortization method. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478156/740-323-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478156/740-323-50-1A + Details
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- Definition Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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- Definition Amount of commitment and contingent commitment, including amount of delayed equity contribution, for investment that generates income tax credit and other income tax benefit under tax credit program elected to be accounted for using proportional amortization method. Includes, but is not limited to, commitment and contingent commitment related to investment under tax credit program not meeting condition for accounting under proportional amortization method. + References Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478156/740-323-50-2 + Details
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