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Note 8 - Deposits (Tables) | 12 Months Ended
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Dec. 31, 2025
Notes Tables |
Schedule Of Deposits [Table Text Block] |
|  | December 31, |  |  | December 31, |
|  | 2025 |  |  | 2024 |
|  | (In Thousands) |
Noninterest-bearing demand |  | $ | 2,684,272 |  |  | $ | 2,619,687 |
Interest-bearing checking |  |  | 10,034,713 |  |  |  | 9,511,161 |
Savings |  |  | 110,298 |  |  |  | 102,088 |
Time deposits, $250,000 and under |  |  | 369,855 |  |  |  | 367,216 |
Time deposits, over $250,000 |  |  | 1,019,896 |  |  |  | 943,307 |
|  | $ | 14,219,034 |  |  | $ | 13,543,459 |
Time Deposit Maturities [Table Text Block] |
|  | (In Thousands) |
2026 |  | $ | 1,324,200 |
2027 |  |  | 49,277 |
2028 |  |  | 3,908 |
2029 |  |  | 8,148 |
2030 |  |  | 4,218 |
Total |  | $ | 1,389,751 |

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- Definition Tabular disclosure of time deposit liability maturities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 470 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481544/470-10-50-1 + Details
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