Note 18 - Revenue from Contracts with Customers - Summary of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue		$ 7,586	$ 6,931	$ 22,791	$ 20,813
Noninterest income, not in-scope(2)	[1]	2,802	904	13,312	99
Total non-interest income		10,388	7,835	36,103	20,912
Fees and Services Charges on Deposit Account [Member]
Revenue		1,892	2,027	5,940	6,421
Wealth Management Fees [Member]
Revenue		2,049	1,528	6,258	4,252
Other Service Fees [Member]
Revenue	[2]	$ 3,645	$ 3,376	$ 10,593	$ 10,140

[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.