Note 30 - Revenue From Contracts With Customers - Revenue by Operating Segment (Details) - USD ($) $ in Thousands		3 Months Ended												12 Months Ended
		Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Mortgage banking income	[1]													$ 3,210	$ 4,724	$ 6,155
Bank owned life insurance	[1]													1,597	914	693
Gain (loss) on sale of premises and equipment	[1]													4,369	(78)	150
Other	[2]													5,300	3,904	1,672
Non-interest income		$ 23,142	$ 24,864	$ 21,940	$ 19,203	$ 18,604	$ 17,614	$ 15,788	$ 13,844	$ 13,698	$ 13,043	$ 12,622	$ 12,536	89,149	65,850	51,899
Commercial Banking [Member]
Mortgage banking income	[1]													3,210	4,724	6,155
Bank owned life insurance	[1]													1,597	914	693
Gain (loss) on sale of premises and equipment	[1]													4,369	(78)	150
Other	[2]													5,300	3,904	1,672
Non-interest income														53,038	38,237	28,493
WM&T [Member]
Mortgage banking income	[1]													0	0	0
Bank owned life insurance	[1]													0	0	0
Gain (loss) on sale of premises and equipment	[1]													0	0	0
Other	[2]													0	0	0
Non-interest income														36,111	27,613	23,406
Fiduciary and Trust [Member]
Non-interest income														36,111	27,613	23,406
Fiduciary and Trust [Member] | Commercial Banking [Member]
Non-interest income														0	0	0
Fiduciary and Trust [Member] | WM&T [Member]
Non-interest income														36,111	27,613	23,406
Deposit Account [Member]
Non-interest income														8,286	5,852	4,161
Deposit Account [Member] | Commercial Banking [Member]
Non-interest income														8,286	5,852	4,161
Deposit Account [Member] | WM&T [Member]
Non-interest income														0	0	0
Credit and Debit Card [Member]
Non-interest income														18,623	13,456	8,480
Credit and Debit Card [Member] | Commercial Banking [Member]
Non-interest income														18,623	13,456	8,480
Credit and Debit Card [Member] | WM&T [Member]
Non-interest income														0	0	0
Treasury Management [Member]
Non-interest income														8,590	6,912	5,407
Treasury Management [Member] | Commercial Banking [Member]
Non-interest income														8,590	6,912	5,407
Treasury Management [Member] | WM&T [Member]
Non-interest income														0	0	0
Product Sales Commissions and Fees [Member]
Non-interest income														3,063	2,553	1,775
Product Sales Commissions and Fees [Member] | Commercial Banking [Member]
Non-interest income														3,063	2,553	1,775
Product Sales Commissions and Fees [Member] | WM&T [Member]
Non-interest income														$ 0	$ 0	$ 0

[1] Outside of the scope of ASC 606.

[2] Outside of the scope of ASC 606, with the exception of safe deposit fees which were nominal for all periods.