Note 24 - Revenue Recognition - Non-interest Income Segregated by Revenue Streams (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Non-interest income									$ 11,226	$ 7,755	$ 5,650
Non-interest income (out-of-scope of Topic 606)									25,009	15,983	14,672
Total non-interest income	$ 11,235	$ 10,031	$ 8,424	$ 6,545	$ 5,213	$ 6,554	$ 7,026	$ 4,945	36,235	23,738	20,322
Deposit Account [Member]
Non-interest income									11,058	7,541	5,476
Other Non-interest Income From Customers [Member]
Non-interest income									$ 168	$ 214	$ 174