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Note 9 - Deposits (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Summary of Deposits [Table Text Block] |
|  | As of December 31, |
|  | 2023 |  |  | 2022 |
|  | (In thousands) |
Deposits |  |  |  |  |  |  |  |
Non-interest-bearing demand deposits |  | $ | 3,529,018 |  |  | $ | 4,168,989 |
Interest bearing demand deposits |  |  | 2,370,685 |  |  |  | 2,509,736 |
Money market deposits |  |  | 3,049,754 |  |  |  | 3,812,724 |
Savings deposits |  |  | 1,039,203 |  |  |  | 1,000,460 |
Time deposits |  |  | 9,336,787 |  |  |  | 7,013,370 |
Total deposits |  | $ | 19,325,447 |  |  | $ | 18,505,279 |
Schedule of Maturities for Time Deposits [Table Text Block] |
|  | Expected Maturity Date at December 31, |  |  |  |  |
|  | 2024 |  |  | 2025 |  |  | 2026 |  |  | 2027 |  |  | 2028 |  |  | Thereafter |  |  | Total |
|  | (In thousands) |
Time deposits |  | $ | 9,312,877 |  |  | $ | 18,429 |  |  | $ | 3,203 |  |  | $ | 2,230 |  |  | $ | 23 |  |  | $ | 25 |  |  | $ | 9,336,787 |
Summary of Interest Expense on Deposits [Table Text Block] |
|  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
|  | (In thousands) |
Interest bearing demand |  | $ | 40,952 |  |  | $ | 8,176 |  |  | $ | 2,249 |
Money market accounts |  |  | 86,097 |  |  |  | 39,913 |  |  |  | 18,241 |
Saving accounts |  |  | 8,916 |  |  |  | 853 |  |  |  | 769 |
Time deposits |  |  | 331,997 |  |  |  | 56,354 |  |  |  | 40,542 |
Total |  | $ | 467,962 |  |  | $ | 105,296 |  |  | $ | 61,801 |

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