Note 16 - Income Tax (Benefit) Provision - Unrecognized Tax Benefits Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Balance at January 1	$ 2,804		$ 2,056
Increases to tax positions taken in the current year
Increases to tax positions taken in a prior year		2,804
Decrease due to resolution of tax positions taken in a prior year	(2,804)		(2,056)
Balance at December 31		$ 2,804