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Note 7 - Income Taxes - Tax Credits and Other Tax Benefits Recognized and Amortization Expense Related to Tax Credit Partnerships (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Tax credits and other tax benefits recognized | $ 2,448 | $ 85 | $ 9,570 | $ 614
Tax credits and other tax benefits recognized | 0 | 399 | 0 | 1,198
Provision for Income Taxes [Member] |  |  |  |
Amortization expense in provision for income taxes | 1,927 | 1,114 | 7,753 | 1,910
Amortization expense in provision for income taxes | 0 | 0 | 0 | 0
Noninterest Expense [Member] |  |  |  |
Amortization expense in provision for income taxes | 0 | 323 | 0 | 970
Amortization expense in provision for income taxes | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Amount, before amortization expense, of income tax credit and other tax benefit generated by investment under tax credit program elected to be accounted for using effective yield method. Includes, but is not limited to, investment under tax credit program not meeting condition for accounting under tax yield method. + References No definition available. + Details
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- Definition Amount, before amortization expense, of income tax credit and other tax benefit (expense) generated by investment under tax credit program elected to be accounted for using proportional amortization method. Includes, but is not limited to, investment under tax credit program not meeting condition for accounting under proportional amortization method. + References No definition available. + 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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