Note 12 - Condensed Financial Statements of Parent Company - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash Flows from Operating Activities
Net income	$ 25,932	$ 20,382
Adjustments to reconcile net income to net cash provided by operating activities:
Net change in other assets	(24)	1,661
Net change in other liabilities	2,025	(515)
Net cash provided by operating activities	29,500	22,882
Cash Flows from Investing Activities
Net cash provided by investing activities	(129,710)	(193,249)
Cash Flows from Financing Activities
Cash dividends paid	(8,950)	(8,806)
Shares repurchased	(6,338)	(13,354)
Net cash used in financing activities	32,850	175,284
Net change in cash	(67,360)	4,917
Cash due from subsidiaries at beginning of year	138,789	133,872
Cash due from subsidiaries at end of year	71,429	138,789
Parent Company [Member]
Cash Flows from Operating Activities
Net income	25,932	20,382
Adjustments to reconcile net income to net cash provided by operating activities:
(Equity) deficit in undistributed net income of subsidiaries	(1,180)	6,715
Net change in refundable income taxes due from subsidiaries	576	(201)
Net change in other assets	593	221
Net change in other liabilities	(390)	(217)
Net cash provided by operating activities	27,891	13,470
Cash Flows from Investing Activities
Net change in interest-bearing deposits	0	10,027
Net cash provided by investing activities	0	10,027
Cash Flows from Financing Activities
Cash dividends paid	(8,950)	(8,806)
Shares repurchased	(6,338)	(13,354)
Net cash used in financing activities	(15,288)	(22,160)
Net change in cash	12,603	1,337
Cash due from subsidiaries at beginning of year	2,324	987
Cash due from subsidiaries at end of year	$ 14,927	$ 2,324