Note 23 - Condensed Financial Statements of Parent Company - Parent Company Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income tax expense (benefit)	$ 218	$ 264	$ (4,201)
Depreciation	3,608	3,587	3,223
Gains on equity investments	(265)	(202)	0
Share-based compensation expense	624	646	527
Earnings on bank owned life insurance and annuities	(993)	(1,140)	(1,716)
Decrease in other assets	434	139	314
Increase in other liabilities	3,264	269	1,738
Net cash provided by operating activities	67,944	61,846	44,681
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of equity investments	(8,619)	(20,000)	0
Purchases of premises and equipment	(1,346)	(4,537)	(8,637)
Proceeds from disposal of premises and equipment	85	558	293
Net cash used in investing activities	(404,828)	(341,747)	(152,463)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid on preferred stock	(900)	(589)	0
Dividends paid on common stock	(9,693)	(9,022)	(8,786)
Exercise of stock options	0	16	0
Proceeds from subordinated debt	0	75,000	30,000
Purchase and retirement of common stock	0	(6,710)	(1,444)
Proceeds from issuance of preferred stock, net of issuance costs	0	14,920	0
Proceeds from issuance of common stock, net of issuance costs	203	294	178
Net cash provided by financing activities	303,143	258,572	145,681
(Decrease) increase in cash and cash equivalents	(33,741)	(21,329)	37,899
Beginning	78,458
Ending	44,717	78,458
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest	27,034	12,425	19,975
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	53,216	45,738	31,326
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income of subsidiaries	(42,325)	(36,903)	(23,333)
Deferred income tax expense (benefit)	(14)	(164)	(141)
Depreciation	37	46	57
Gains on equity investments	(265)	(202)	0
Share-based compensation expense	231	244	211
Earnings on bank owned life insurance and annuities	17	4	1
Decrease in other assets	432	163	(285)
Increase in other liabilities	1,209	584	977
Net cash provided by operating activities	12,538	9,510	8,813
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of equity investments	(5,384)	(20,000)	0
Investment in bank subsidiary	0	(55,000)	(25,000)
Purchases of premises and equipment	0	(124)	(9)
Proceeds from disposal of premises and equipment	0	47	0
Net cash used in investing activities	(5,384)	(75,077)	(25,009)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid on preferred stock	(900)	(589)	0
Dividends paid on common stock	(9,693)	(9,022)	(8,786)
Exercise of stock options	0	16	0
Proceeds from subordinated debt	0	75,000	30,000
Purchase and retirement of common stock	0	(6,710)	(1,444)
Proceeds from issuance of preferred stock, net of issuance costs	0	14,920	0
Proceeds from issuance of common stock, net of issuance costs	203	294	178
Net cash provided by financing activities	(10,390)	73,909	19,948
(Decrease) increase in cash and cash equivalents	(3,236)	8,342	3,752
Beginning	14,279	5,937	2,185
Ending	11,043	14,279	5,937
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest	$ 4,786	$ 2,195	$ 1,145