Note 18 - Revenue from Contracts with Customers - Summary of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Revenues		$ 8,563	$ 7,111
Noninterest income, not in-scope(2)	[1]	(2,777)	5,810
Total non-interest income		5,786	12,921
Fees and Services Charges on Deposit Account [Member]
Revenues		2,054	2,027
Wealth Management Fees [Member]
Revenues		3,137	1,696
Other Service Fees [Member]
Revenues	[2]	$ 3,372	$ 3,388

[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.