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Note 13 - Assets and Liabilities Measured and Reported at Fair Value - Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Securities available-for-sale | $ 1,020,248 | $ 1,144,617
Derivative | 17,590 | 10,727
US Government-sponsored Enterprises Debt Securities [Member] |  |
Securities available-for-sale | 109,233 | 143,626
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Securities available-for-sale | 672,666 | 752,738
US States and Political Subdivisions Debt Securities [Member] |  |
Securities available-for-sale | 116,891 | 127,599
Other Debt Obligations [Member] |  |
Securities available-for-sale | 3,449 | 5,615
Fair Value, Recurring [Member] |  |
Securities available-for-sale | 1,020,248 | 1,144,617
Mortgage loans held for sale | 6,535 | 2,606
Interest rate swap assets | 17,590 | 10,727
Total assets | 1,044,685 | 1,158,134
Interest rate swap liabilities | 11,929 | 10,737
Fair Value, Recurring [Member] | Rate Lock Loan Commitments [Member] |  |
Derivative | 202 | 137
Fair Value, Recurring [Member] | Mandatory Forward Contract [Member] |  |
Derivative | 110 | 47
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Securities available-for-sale | 118,009 | 115,039
Mortgage loans held for sale | 0 | 0
Interest rate swap assets | 0 | 0
Total assets | 118,009 | 115,039
Interest rate swap liabilities | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Rate Lock Loan Commitments [Member] |  |
Derivative | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Mandatory Forward Contract [Member] |  |
Derivative | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Securities available-for-sale | 902,239 | 1,029,578
Mortgage loans held for sale | 6,535 | 2,606
Interest rate swap assets | 17,590 | 10,727
Total assets | 926,676 | 1,043,095
Interest rate swap liabilities | 11,929 | 10,737
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Rate Lock Loan Commitments [Member] |  |
Derivative | 202 | 137
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mandatory Forward Contract [Member] |  |
Derivative | 110 | 47
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Securities available-for-sale | 0 | 0
Mortgage loans held for sale | 0 | 0
Interest rate swap assets | 0 | 0
Total assets | 0 | 0
Interest rate swap liabilities | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Rate Lock Loan Commitments [Member] |  |
Derivative | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mandatory Forward Contract [Member] |  |
Derivative | 0 | 0
Fair Value, Recurring [Member] | US Treasury and Government [Member] |  |
Securities available-for-sale | 118,009 | 115,039
Fair Value, Recurring [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Securities available-for-sale | 118,009 | 115,039
Fair Value, Recurring [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] |  |
Securities available-for-sale | 109,233 | 143,626
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Securities available-for-sale | 109,233 | 143,626
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Securities available-for-sale | 672,666 | 752,738
Fair Value, Recurring [Member] | Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Securities available-for-sale | 672,666 | 752,738
Fair Value, Recurring [Member] | Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Securities available-for-sale | 116,891 | 127,599
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Securities available-for-sale | 116,891 | 127,599
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | Other Debt Obligations [Member] |  |
Securities available-for-sale | 3,449 | 5,615
Fair Value, Recurring [Member] | Other Debt Obligations [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Securities available-for-sale | 0 | 0
Fair Value, Recurring [Member] | Other Debt Obligations [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Securities available-for-sale | 3,449 | 5,615
Fair Value, Recurring [Member] | Other Debt Obligations [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Securities available-for-sale | $ 0 | $ 0

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. 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