Note 3 - Loans - Loans by Class (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Total loans held for investment, net of unearned income	$ 2,244,296	$ 2,165,569
Total loans held for investment, net of unearned income, percent	100.00%	100.00%
Commercial Portfolio Segment [Member]
Non-covered loans	$ 1,295,847	$ 1,230,476
Non-covered loans, percent	57.73%	56.82%
Commercial Portfolio Segment [Member] | Construction, Development and Other Land [Member]
Non-covered loans	$ 77,460	$ 65,806
Non-covered loans, percent	3.45%	3.04%
Total loans held for investment, net of unearned income	$ 77,460	$ 65,806
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Non-covered loans	$ 152,885	$ 133,630
Non-covered loans, percent	6.81%	6.17%
Total loans held for investment, net of unearned income	$ 139,005	$ 112,988
Commercial Portfolio Segment [Member] | Multi-family Residential [Member]
Non-covered loans	$ 115,269	$ 100,402
Non-covered loans, percent	5.14%	4.64%
Total loans held for investment, net of unearned income	$ 115,269	$ 100,402
Commercial Portfolio Segment [Member] | Single Family Non-owner Occupied [Member]
Non-covered loans	$ 198,282	$ 198,778
Non-covered loans, percent	8.83%	9.18%
Commercial Portfolio Segment [Member] | Non-farm, Non-residential [Member]
Non-covered loans	$ 728,142	$ 707,506
Non-covered loans, percent	32.44%	32.67%
Total loans held for investment, net of unearned income	$ 728,142	$ 707,506
Commercial Portfolio Segment [Member] | Agricultural [Member]
Non-covered loans	$ 9,496	$ 9,341
Non-covered loans, percent	0.42%	0.43%
Total loans held for investment, net of unearned income	$ 9,496	$ 9,341
Commercial Portfolio Segment [Member] | Farmland [Member]
Non-covered loans	$ 14,313	$ 15,013
Non-covered loans, percent	0.64%	0.69%
Total loans held for investment, net of unearned income	$ 14,313	$ 15,013
Consumer Real Estate Portfolio Segment [Member]
Non-covered loans	$ 804,389	$ 800,631
Non-covered loans, percent	35.85%	36.97%
Consumer Real Estate Portfolio Segment [Member] | Home Equity Lines [Member]
Non-covered loans	$ 79,461	$ 79,857
Non-covered loans, percent	3.54%	3.69%
Total loans held for investment, net of unearned income	$ 79,461	$ 79,857
Consumer Real Estate Portfolio Segment [Member] | Single Family Owner Occupied [Member]
Non-covered loans	$ 705,070	$ 703,864
Non-covered loans, percent	31.43%	32.50%
Total loans held for investment, net of unearned income	$ 903,352	$ 902,642
Consumer Real Estate Portfolio Segment [Member] | Owner Occupied Construction [Member]
Non-covered loans	$ 19,858	$ 16,910
Non-covered loans, percent	0.88%	0.78%
Total loans held for investment, net of unearned income	$ 19,858	$ 16,910
Consumer and Other Portfolio Segment [Member]
Non-covered loans	$ 144,060	$ 134,462
Non-covered loans, percent	6.42%	6.21%
Consumer and Other Portfolio Segment [Member] | Consumer Loans [Member]
Non-covered loans	$ 139,280	$ 129,794
Non-covered loans, percent	6.21%	5.99%
Total loans held for investment, net of unearned income	$ 144,060	$ 134,462
Consumer and Other Portfolio Segment [Member] | Other Loan [Member]
Non-covered loans	$ 4,780	$ 4,668
Non-covered loans, percent	0.21%	0.22%