Note 12 - Commitments and Contingent Liabilities - Off Balance Sheet Commitments to Extend Credit (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Off balance sheet commitments to extend credit | $ 2,394,703 | $ 2,330,371 |
| Commercial and Industrial Loans [Member] | ||
| Off balance sheet commitments to extend credit | 792,312 | 811,568 |
| Construction and Development [Member] | ||
| Off balance sheet commitments to extend credit | 607,147 | 639,190 |
| Home Equity Loans [Member] | ||
| Off balance sheet commitments to extend credit | 438,518 | 429,070 |
| Credit Cards [Member] | ||
| Off balance sheet commitments to extend credit | 91,899 | 90,673 |
| Overdrafts [Member] | ||
| Off balance sheet commitments to extend credit | 54,289 | 54,863 |
| Letters of Credit [Member] | ||
| Off balance sheet commitments to extend credit | 27,734 | 28,410 |
| Other Off Balance Sheet Commitments [Member] | ||
| Off balance sheet commitments to extend credit | 112,106 | 99,462 |
| Future Loan Commitments [Member] | ||
| Off balance sheet commitments to extend credit | $ 270,698 | $ 177,135 |