Note 23 - Revenue From Contracts With Customers - Revenue by Operating Segment (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Mortgage banking income	[1]	$ 1,295	$ 1,303	$ 2,298	$ 2,747
Bank owned life insurance	[1]	270	206	536	367
Other	[2]	1,153	629	2,351	1,399
Non-interest income		21,940	15,788	41,143	29,632
Gain on sale of securities				0	0
Commercial Banking [Member]
Mortgage banking income	[1]	1,295	1,303	2,298	2,747
Bank owned life insurance	[1]	270	206	536	367
Other	[2]	1,153	629	2,351	1,399
Non-interest income		12,445	8,930	23,405	16,526
Gain on sale of securities				0	0
WM&T [Member]
Mortgage banking income	[1]	0	0	0	0
Bank owned life insurance	[1]	0	0	0	0
Other	[2]	0	0	0	0
Non-interest income		9,495	6,858	17,738	13,106
Gain on sale of securities				0	0
Fiduciary and Trust [Member]
Non-interest income		9,495	6,858	17,738	13,106
Fiduciary and Trust [Member] | Commercial Banking [Member]
Non-interest income		0	0	0	0
Fiduciary and Trust [Member] | WM&T [Member]
Non-interest income		9,495	6,858	17,738	13,106
Deposit Account [Member]
Non-interest income		2,061	1,233	3,924	2,177
Deposit Account [Member] | Commercial Banking [Member]
Non-interest income		2,061	1,233	3,924	2,177
Deposit Account [Member] | WM&T [Member]
Non-interest income		0	0	0	0
Credit and Debit Card [Member]
Non-interest income		4,748	3,284	8,867	5,557
Credit and Debit Card [Member] | Commercial Banking [Member]
Non-interest income		4,748	3,284	8,867	5,557
Credit and Debit Card [Member] | WM&T [Member]
Non-interest income		0	0	0	0
Treasury Management [Member]
Non-interest income		2,187	1,730	4,091	3,270
Treasury Management [Member] | Commercial Banking [Member]
Non-interest income		2,187	1,730	4,091	3,270
Treasury Management [Member] | WM&T [Member]
Non-interest income		0	0	0	0
Product Sales Commissions and Fees [Member]
Non-interest income		731	545	1,338	1,009
Product Sales Commissions and Fees [Member] | Commercial Banking [Member]
Non-interest income		731	545	1,338	1,009
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.