Note 8 - Income Taxes - U.S. and Foreign Components of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Domestic	$ (11,630)	$ (21,403)	$ (24,875)
Foreign	(26,100)	(80,681)	(96,312)
(Loss) income before income taxes	$ (37,730)	$ (102,084)	$ (121,187)