Note 12 - Condensed Financial Statements of Parent Company - Condensed Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income
Gain on sale of private equity investments	$ 3,823	$ 0
Other income	1,091	1,261
Expenses
Applicable income tax (expense) benefit	5,831	4,251
Net income	25,932	20,382
Parent Company [Member]
Income
Dividends from subsidiaries	25,000	14,508
Gain on sale of private equity investments	3,823	0
Other income	0	1
Total income	28,823	14,509
Expenses
Other expenses	1,220	1,135
Income before income tax (expense) benefit and equity in undistributed net income of subsidiaries	27,604	13,374
Applicable income tax (expense) benefit	491	(293)
Income before equity (deficit) in undistributed net income of subsidiaries	27,112	13,667
Equity (deficit) in undistributed net income of subsidiaries	(1,180)	6,715
Net income	$ 25,932	$ 20,382