Note 4 - Loans - Loans by Class (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Non-covered loans	$ 2,400,197	$ 2,165,569
Non-covered loans, percent	100.00%	100.00%
Commercial Portfolio Segment [Member]
Non-covered loans	$ 1,433,263	$ 1,230,476
Non-covered loans, percent	59.72%	56.82%
Commercial Portfolio Segment [Member] | Construction, Development and Other Land [Member]
Non-covered loans	$ 117,174	$ 65,806
Non-covered loans, percent	4.88%	3.04%
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Non-covered loans	$ 150,428	$ 133,630
Non-covered loans, percent	6.27%	6.17%
Commercial Portfolio Segment [Member] | Multi-family Residential [Member]
Non-covered loans	$ 148,026	$ 100,402
Non-covered loans, percent	6.17%	4.64%
Commercial Portfolio Segment [Member] | Single Family Non-owner Occupied [Member]
Non-covered loans	$ 206,121	$ 198,778
Non-covered loans, percent	8.59%	9.18%
Commercial Portfolio Segment [Member] | Non-farm, Non-residential [Member]
Non-covered loans	$ 787,703	$ 707,506
Non-covered loans, percent	32.82%	32.67%
Commercial Portfolio Segment [Member] | Agricultural [Member]
Non-covered loans	$ 12,032	$ 9,341
Non-covered loans, percent	0.50%	0.43%
Commercial Portfolio Segment [Member] | Farmland [Member]
Non-covered loans	$ 11,779	$ 15,013
Non-covered loans, percent	0.49%	0.69%
Consumer Real Estate Portfolio Segment [Member]
Non-covered loans	$ 820,548	$ 800,631
Non-covered loans, percent	34.19%	36.97%
Consumer Real Estate Portfolio Segment [Member] | Home Equity Lines [Member]
Non-covered loans	$ 75,642	$ 79,857
Non-covered loans, percent	3.15%	3.69%
Consumer Real Estate Portfolio Segment [Member] | Single Family Owner Occupied [Member]
Non-covered loans	$ 734,540	$ 703,864
Non-covered loans, percent	30.61%	32.50%
Consumer Real Estate Portfolio Segment [Member] | Owner Occupied Construction [Member]
Non-covered loans	$ 10,366	$ 16,910
Non-covered loans, percent	0.43%	0.78%
Consumer and Other Portfolio Segment [Member]
Non-covered loans	$ 146,386	$ 134,462
Non-covered loans, percent	6.09%	6.21%
Consumer and Other Portfolio Segment [Member] | Consumer Loans [Member]
Non-covered loans	$ 144,582	$ 129,794
Non-covered loans, percent	6.02%	5.99%
Consumer and Other Portfolio Segment [Member] | Other Loan [Member]
Non-covered loans	$ 1,804	$ 4,668
Non-covered loans, percent	0.07%	0.22%