Note 22 - Segment Reporting - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net interest income (loss)	$ 107,045	$ 87,839	$ 99,729
Provision for credit losses	18,141	2,057	0
Noninterest income (loss)	114,930	80,229	111,223
Compensation	87,311	76,290	80,656
Employee taxes and benefits	22,967	20,051	21,915
Business services, software and technology expense	21,758	21,053	19,487
Business Combination, Acquisition Related Costs	9,974	0	2,540
Other	5,640	5,333	6,831
Total noninterest expense	180,675	150,157	158,770
Income before income taxes	23,159	15,854	52,182
Total assets	5,261,673	3,907,713	3,779,637
Other Noninterest [Member]
Other	38,665	32,763	34,172
Operating Segments [Member] | Banking Segment [Member]
Net interest income (loss)	109,752	90,520	102,069
Provision for credit losses	18,141	2,057	0
Noninterest income (loss)	20,859	(7,017)	23,120
Compensation	43,169	37,951	42,767
Employee taxes and benefits	10,819	9,295	10,781
Business services, software and technology expense	10,949	10,185	9,359
Business Combination, Acquisition Related Costs	0	0	0
Total noninterest expense	88,502	75,858	81,684
Income before income taxes	23,968	5,588	43,505
Total assets	5,182,147	3,833,725	3,707,296
Operating Segments [Member] | Banking Segment [Member] | Other Noninterest [Member]
Other	23,565	18,427	18,777
Operating Segments [Member] | Retirement and Benefit Services Segment [Member]
Net interest income (loss)	0	0	0
Provision for credit losses	0	0	0
Noninterest income (loss)	64,365	65,294	67,135
Compensation	28,389	26,087	27,001
Employee taxes and benefits	7,745	7,144	7,428
Business services, software and technology expense	7,574	7,898	7,443
Business Combination, Acquisition Related Costs	0	0	0
Total noninterest expense	56,545	53,361	55,058
Income before income taxes	7,820	11,933	12,077
Total assets	32,144	34,352	40,821
Operating Segments [Member] | Retirement and Benefit Services Segment [Member] | Other Noninterest [Member]
Other	12,837	12,232	13,186
Operating Segments [Member] | Wealth Management Segment [Member]
Net interest income (loss)	0	0	0
Provision for credit losses	0	0
Noninterest income (loss)	26,171	21,855	20,870
Compensation	10,065	8,049	6,836
Employee taxes and benefits	2,366	1,850	1,718
Business services, software and technology expense	2,506	2,372	2,154
Business Combination, Acquisition Related Costs	0	0	0
Total noninterest expense	15,638	13,488	11,855
Income before income taxes	10,533	8,367	9,015
Total assets	5,449	4,757	4,032
Operating Segments [Member] | Wealth Management Segment [Member] | Other Noninterest [Member]
Other	701	1,217	1,147
Operating Segments [Member] | Wealth Management [Member]
Provision for credit losses			0
Operating Segments [Member] | Mortgage Segment [Member]
Provision for credit losses			0
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Net interest income (loss)	(2,707)	(2,681)	(2,340)
Provision for credit losses	0	0	0
Noninterest income (loss)	3,535	97	98
Compensation	5,688	4,203	4,052
Employee taxes and benefits	2,037	1,762	1,988
Business services, software and technology expense	729	598	531
Business Combination, Acquisition Related Costs	9,974	0	2,540
Total noninterest expense	19,990	7,450	10,173
Income before income taxes	(19,162)	(10,034)	(12,415)
Total assets	41,933	34,879	27,488
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Other Noninterest [Member]
Other	$ 1,562	$ 887	$ 1,062