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Note 3 - Loans and Allowance for Credit Losses on Loans - Credit Card Loan Payment Activity (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Loans | [1] | $ 7,226,429 | $ 7,041,310
Credit Card Receivable [Member] |  |  |
Loans |  | 24,920 | 25,243
Commercial Portfolio Segment [Member] | Credit Card Receivable [Member] |  |  |
Loans |  | 24,920 | 25,243
Commercial Portfolio Segment [Member] | Credit Card Receivable [Member] | Performing Financial Instruments [Member] |  |  |
Loans |  | 24,810 | 25,191
Commercial Portfolio Segment [Member] | Credit Card Receivable [Member] | Nonperforming Financial Instruments [Member] |  |  |
Loans |  | $ 110 | $ 52
[1] | Total loans are presented inclusive of premiums, discounts and net loan origination fees and costs.

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