Note 20 - Income Taxes - Summary of Income Before Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended						12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Domestic							$ (72,765)	$ 14,243	$ 68,058
Foreign							(4,313)	(5,915)	213
(Loss) income before (benefit from) provision for income taxes	$ 56,513	$ (27,559)	$ (77,111)	$ 83,959	$ 16,369	$ (26,411)	$ (77,078)	$ 8,328	$ 68,271