Note 17 - Revenue from Contracts with Customers - Summary of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Revenues		$ 9,160	$ 8,563
Noninterest income, not in-scope(2)	[1]	840	(2,777)
Total non-interest income		10,000	5,786
Fees and Services Charges on Deposit Account [Member]
Revenues		2,112	2,054
Wealth Management Fees [Member]
Revenues		3,557	3,137
Other Service Fees [Member]
Revenues	[2]	$ 3,491	$ 3,372

[1] These amounts primarily represent revenue from contracts with customers that are out of the scope of ASC 606.

[2] Other service fees comprise of fees related to letters of credit, wire fees, fees on foreign exchange transactions and other immaterial individual revenue streams.