Note 17 - Revenue from Contracts with Customers - Summary of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues		$ 9,966	$ 7,072	$ 19,126	$ 15,636
Noninterest income, not in-scope(2)	[1]	2,617	8,534	3,457	5,756
Total non-interest income		12,583	15,606	22,583	21,392
Fees and Services Charges on Deposit Account [Member]
Revenues		2,144	1,873	4,256	3,928
Wealth Management Fees [Member]
Revenues		3,939	2,209	7,496	5,346
Other Service Fees [Member]
Revenues	[2]	$ 3,883	$ 2,990	$ 7,374	$ 6,362

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

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