Note 23 - Revenue From Contracts With Customers - Revenue by Operating Segment (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Mortgage banking income	[1]	$ 1,030	$ 1,295	$ 2,068	$ 2,298
Bank owned life insurance	[1]	559	270	1,108	536
Gain (loss) on sale of premises and equipment	[1]	(225)	(2)	(227)	(28)
Other	[2]	1,088	1,155	2,320	2,379
Non-interest income		22,860	21,940	44,907	41,143
Commercial Banking [Member]
Mortgage banking income	[1]	1,030	1,295	2,068	2,298
Bank owned life insurance	[1]	559	270	1,108	536
Gain (loss) on sale of premises and equipment	[1]	(225)	(2)	(227)	(28)
Other	[2]	1,088	1,155	2,320	2,379
Non-interest income		12,714	12,445	25,234	23,405
WM&T [Member]
Mortgage banking income	[1]	0	0	0	0
Bank owned life insurance	[1]	0	0	0	0
Gain (loss) on sale of premises and equipment	[1]	0	0	0	0
Other	[2]	0	0	0	0
Non-interest income		10,146	9,495	19,673	17,738
Fiduciary and Trust [Member]
Non-interest income		10,146	9,495	19,673	17,738
Fiduciary and Trust [Member] | Commercial Banking [Member]
Non-interest income		0	0	0	0
Fiduciary and Trust [Member] | WM&T [Member]
Non-interest income		10,146	9,495	19,673	17,738
Deposit Account [Member]
Non-interest income		2,201	2,061	4,350	3,924
Deposit Account [Member] | Commercial Banking [Member]
Non-interest income		2,201	2,061	4,350	3,924
Deposit Account [Member] | WM&T [Member]
Non-interest income		0	0	0	0
Credit and Debit Card [Member]
Non-interest income		4,712	4,748	9,194	8,867
Credit and Debit Card [Member] | Commercial Banking [Member]
Non-interest income		4,712	4,748	9,194	8,867
Credit and Debit Card [Member] | WM&T [Member]
Non-interest income		0	0	0	0
Treasury Management [Member]
Non-interest income		2,549	2,187	4,867	4,091
Treasury Management [Member] | Commercial Banking [Member]
Non-interest income		2,549	2,187	4,867	4,091
Treasury Management [Member] | WM&T [Member]
Non-interest income		0	0	0	0
Product Sales Commissions and Fees [Member]
Non-interest income		800	731	1,554	1,338
Product Sales Commissions and Fees [Member] | Commercial Banking [Member]
Non-interest income		800	731	1,554	1,338
Product Sales Commissions and Fees [Member] | WM&T [Member]
Non-interest income		$ 0	$ 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.