Note 11 - Income Taxes - Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Domestic	$ (42,210)	$ (58,505)
Foreign	0	0
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ (42,210)	$ (58,505)