Note 21 - Commitments and Contingent Liabilities - Off Balance Sheet Commitments to Extend Credit (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Off balance sheet commitments to extend credit	$ 2,456,664	$ 2,063,587
Commercial and Industrial Loans [Member]
Off balance sheet commitments to extend credit	897,673	784,429
Construction and Development [Member]
Off balance sheet commitments to extend credit	606,668	449,028
Home Equity Loans [Member]
Off balance sheet commitments to extend credit	381,110	358,610
Credit Cards [Member]
Off balance sheet commitments to extend credit	83,700	64,231
Overdrafts [Member]
Off balance sheet commitments to extend credit	55,124	57,193
Letters of Credit [Member]
Off balance sheet commitments to extend credit	33,778	34,704
Other Off Balance Sheet Commitments [Member]
Off balance sheet commitments to extend credit	100,447	93,419
Future Loan Commitments [Member]
Off balance sheet commitments to extend credit	$ 298,164	$ 221,973