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v3.25.1

Note 3 - Loans and Allowance for Credit Losses on Loans (Details Textual) Pure in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 USD ($) | Mar. 31, 2024 | Dec. 31, 2024 USD ($)
Financing Receivable, Accrued Interest, after Allowance for Credit Loss |  | $ 24,000,000 |  | $ 23,000,000
Financing Receivable, before Allowance for Credit Loss | [1] | 6,646,360,000 |  | 6,520,402,000
Loans and Leases Receivable, Related Parties |  | 91,000,000 |  | 97,000,000
Financing Receivable, Nonaccrual, Interest Income |  | 0 |  | 0
Mortgage Loans in Process of Foreclosure, Amount |  | $ 509,000 |  | 569,000
Financing Receivable, Modifications, Number of Contracts |  | 0 | 0 |
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts |  | 0 | 0 |
Asset Pledged as Collateral [Member] | Federal Home Loan Bank Advances [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 3,550,000,000 |  | $ 3,480,000,000
[1] | (1) Total loans are presented inclusive of premiums, discounts and net loan origination fees and costs.

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- Definition Amount, after allowance for credit loss, of accrued interest on financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3A + Details
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