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Note 12 - Commitments and Off-balance-sheet Risk - Instruments Carried at Fair Values (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Contractual amounts of financial instruments with off-balance sheet risk | $ 2,113,504 | $ 1,908,294
Standby Letters of Credit [Member] |  |
Standby letters of credit, contract amount | 19,393 | 23,539
Contractual amounts of financial instruments with off-balance sheet risk | $ 99 | $ 108

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- Definition The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-10 + Details
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Period Type: | instant

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- Definition The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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