Note 24 - Revenue Recognition - Non-interest Income Segregated by Revenue Streams (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Non-interest income									$ 7,755	$ 5,650	$ 4,081
Non-interest income (out-of-scope of Topic 606)									15,983	14,672	16,016
Total non-interest income	$ 5,213	$ 6,554	$ 7,026	$ 4,945	$ 4,888	$ 5,131	$ 5,768	$ 4,535	23,738	20,322	20,097
Deposit Account [Member]
Non-interest income									7,541	5,476	3,904
Other Non-interest Income From Customers [Member]
Non-interest income									$ 214	$ 174	$ 177