Note 18 - Revenue from Contracts with Customers - Summary of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Revenue		$ 7,111	$ 6,867
Noninterest income, not in-scope(2)	[1]	5,810	(1,557)
Total non-interest income		12,921	5,310
Fees and Services Charges on Deposit Account [Member]
Revenue		2,027	2,318
Wealth Management Fees [Member]
Revenue		1,696	1,301
Other Service Fees [Member]
Revenue	[2]	$ 3,388	$ 3,248

[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.