Note 2 - Ownership Interests and Advances - Schedule of Equity Method Investment Partner Company Results Of Operation (Details) $ in Thousands	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Current assets	$ 21,423	$ 30,278
Total Assets	37,692	54,028
Current liabilities	1,817	1,734
Total Liabilities and Equity	37,692	54,028
High Traction Stage [Member]
Current assets	126,042	127,651
Non-current assets	55,073	53,220
Total Assets	181,115	180,871
Current liabilities	92,990	62,538
Non-current liabilities	220,681	158,975
Shareholders’ deficit	(132,556)	(40,642)
Total Liabilities and Equity	$ 181,115	$ 180,871
Number of equity method ownership interests	8	9