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Note 12 - Commitments and Contingent Liabilities (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) | $ 425,000 | $ 0 | $ 350,000 | $ 475,000 |
Standby Letters of Credit [Member] | Minimum [Member] |  |  |  |  |
Guarantee Obligations, Agreement Term |  |  | 1 year |  |
Standby Letters of Credit [Member] | Maximum [Member] |  |  |  |  |
Guarantee Obligations, Agreement Term |  |  | 2 years |  |
Performance Guarantee [Member] |  |  |  |  |
Guarantee Obligation, Estimated Payment Under Default on Contract | 4,000,000 |  | $ 4,000,000 |  |
Other Liabilities [Member] |  |  |  |  |
Off-Balance-Sheet, Credit Loss, Liability | 7,100,000 |  | 7,100,000 |  | $ 6,800,000
Tax Credit Contribution Commitments | $ 114,000,000 |  | $ 114,000,000 |  |

X
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- Definition Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482454/460-10-45-1 + Details
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