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Note 21 - Commitments and Contingent Liabilities (Details Textual) - USD ($) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2022 | Mar. 07, 2022 | Dec. 31, 2021 | Jan. 01, 2020 | Dec. 31, 2019
Off-Balance Sheet, Credit Loss, Liability, Ending Balance |  |  |  | $ 3,850,000 | $ 350,000
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) | $ 575,000 |  |  |  |
Standby Letters of Credit [Member] | Minimum [Member] |  |  |  |  |
Guarantee Obligations, Agreement Term (Month) | 1 month |  |  |  |
Standby Letters of Credit [Member] | Maximum [Member] |  |  |  |  |
Guarantee Obligations, Agreement Term (Month) | 2 months |  |  |  |
Performance Guarantee [Member] |  |  |  |  |
Guarantee Obligation, Estimated Payment Under Default on Contract | $ 3,000,000 |  |  |  |
Commonwealth [Member] |  |  |  |  |
Off-Balance Sheet, Credit Loss, Liability, Ending Balance |  | $ 500,000 |  |  |
Other Liabilities [Member] |  |  |  |  |
Off-Balance Sheet, Credit Loss, Liability, Ending Balance | $ 4,500,000 |  | $ 3,500,000 |  |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=121611286&loc=d3e11927-110247 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82919202-210446 + Details
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- Definition Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. 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 -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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