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v3.23.3

Note 5 - Loans and the Allowance for Credit Losses (Details Textual) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($)
Financing Receivable, after Allowance for Credit Loss | $ 8,092,879,000 |  | $ 8,009,176,000
Financing Receivable, Modified, Subsequent Default, Number of Contracts | 0 |  |
Financing Receivable, Trouble Debt Restructuring, Number of Contracts |  | 5 |
Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Troubled Debt Restructuring, One Time Principal Payment |  | $ 500,000 |
Asset Pledged as Collateral [Member] | Federal Home Loan Bank Advances [Member] |  |  |
Financing Receivable, after Allowance for Credit Loss | $ 5,700,000,000 |  | $ 2,700,000,000

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- Definition Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(5)(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481990/310-10-45-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-5 + Details
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