Note 3 - Going Concern and Management's Plans (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Net Income (Loss) Attributable to Parent	$ (4,045)	$ 10,219
Gain (Loss) on Extinguishment of Debt	(22)	14,520
Other Nonoperating Income (Expense)	(54)	201
Operating Income (Loss)	(4,090)	(4,405)
Income Tax Expense (Benefit)	(0)	$ 114
Retained Earnings (Accumulated Deficit)	(850,655)		$ (846,610)
Cash and Cash Equivalent	1,173		1,779
Liabilities, Current	$ 6,476		$ 5,717