Note 21 - Parent Corporation Only Financial Statements - Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 61,421	$ 61,629
Investment securities	617,162	634,884
Equity securities	18,564	15,811
Other assets	118,751	125,069
Total assets	9,855,603	9,644,948
LIABILITIES AND STOCKHOLDERS’ EQUITY
Other liabilities	76,592	87,301
Subordinated debentures, net of debt issuance costs	79,439	153,255
Balance	1,216,620	1,178,751	$ 1,124,212	$ 915,310
Total liabilities and stockholders’ equity	9,855,603	9,644,948
Parent Company [Member]
ASSETS
Cash and due from banks	35,885	117,162
Investment in subsidiaries	1,253,497	1,179,342
Investment securities	156	32,405
Equity securities	6,957	4,218
Other assets	0	699
Total assets	1,296,495	1,333,826
LIABILITIES AND STOCKHOLDERS’ EQUITY
Other liabilities	436	1,820
Subordinated debentures, net of debt issuance costs	79,439	153,255
Balance	1,216,620	1,178,751
Total liabilities and stockholders’ equity	$ 1,296,495	$ 1,333,826