Note 23 - Condensed Financial Statements of Parent Company - Parent Company Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income tax (benefit) expense	$ (303)	$ 218	$ 264
Depreciation	3,848	3,608	3,587
Gains on equity investments	(740)	(265)	(202)
Share-based compensation expense	739	624	646
Earnings on bank owned life insurance and annuities	(1,715)	(993)	(1,140)
Decrease in other assets	1,878	434	139
Increase in other liabilities	4,290	3,264	269
Net cash provided by operating activities	73,729	67,944	61,846
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of equity investments	(744)	(8,619)	(20,000)
Proceeds from redemptions of equity investments	21,413	0	0
Purchases of premises and equipment	(7,087)	(1,346)	(4,537)
Proceeds from disposal of premises and equipment	116	85	558
Net cash used in investing activities	(155,418)	(404,828)	(341,747)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid on preferred stock	(900)	(900)	(589)
Dividends paid on common stock	(11,949)	(9,693)	(9,022)
Exercise of stock options	0	0	16
Proceeds from subordinated debt	0	0	75,000
Purchase and retirement of common stock	0	0	(6,710)
Purchase of minority interest	(714)	0	0
Proceeds from issuance of preferred stock, net of issuance costs	0	0	14,920
Proceeds from issuance of common stock, net of issuance costs	244	203	294
Net cash provided by financing activities	89,204	303,143	258,572
Increase (decrease) in cash and cash equivalents	7,515	(33,741)	(21,329)
Beginning	44,717
Ending	52,232	44,717
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest	82,482	27,034	12,425
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	55,239	53,216	45,738
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income of subsidiaries	(43,327)	(42,325)	(36,903)
Deferred income tax (benefit) expense	(112)	(14)	(164)
Depreciation	39	37	46
Gains on equity investments	(740)	(265)	(202)
Share-based compensation expense	274	231	244
Earnings on bank owned life insurance and annuities	10	17	4
Decrease in other assets	131	432	163
Increase in other liabilities	1,614	1,209	584
Net cash provided by operating activities	13,128	12,538	9,510
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of equity investments	(744)	(5,384)	(20,000)
Proceeds from redemptions of equity investments	21,413	0	0
Investment in bank subsidiary	0	0	(55,000)
Purchases of premises and equipment	(62)	0	(124)
Proceeds from disposal of premises and equipment	0	0	47
Net cash used in investing activities	20,607	(5,384)	(75,077)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid on preferred stock	(900)	(900)	(589)
Dividends paid on common stock	(11,949)	(9,693)	(9,022)
Exercise of stock options	0	0	16
Proceeds from subordinated debt	0	0	75,000
Purchase and retirement of common stock	0	0	(6,710)
Purchase of minority interest	(714)	0	0
Proceeds from issuance of preferred stock, net of issuance costs	0	0	14,920
Proceeds from issuance of common stock, net of issuance costs	244	203	294
Net cash provided by financing activities	(13,319)	(10,390)	73,909
Increase (decrease) in cash and cash equivalents	20,416	(3,236)	8,342
Beginning	11,043	14,279	5,937
Ending	31,459	11,043	14,279
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest	$ 5,048	$ 4,786	$ 2,195