Note 23 - Condensed Financial Statements of Parent Company - Parent Company Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net gains on equity investments	$ 265	$ 202	$ 0
Interest expense	29,761	12,483	19,521
Income tax expense	14,094	11,663	7,428
Preferred stock dividends	900	589	0
Net income applicable to common shares	52,316	45,149	31,326
Parent Company [Member]
Dividends from subsidiaries	15,800	12,100	10,000
Other dividends and interest income	26	16	33
Net gains on equity investments	265	202	0
Management and service fees from subsidiaries	2,088	1,920	1,856
Total income	18,179	14,238	11,889
Interest expense	5,256	2,497	1,109
Operating expenses	3,283	3,736	3,306
Total expenses	8,539	6,233	4,415
Income before income taxes and equity in undistributed income of subsidiaries	9,640	8,005	7,474
Income tax expense	(1,251)	(830)	(519)
Income before equity in undistributed income of subsidiaries	10,891	8,835	7,993
Equity in undistributed income of subsidiaries	42,325	36,903	23,333
Net income	53,216	45,738	31,326
Preferred stock dividends	900	589	0
Net income applicable to common shares	$ 52,316	$ 45,149	$ 31,326