Note 2 - Ownership Interests and Advances - Schedule of Equity Method Investment Partner Company Results Of Operation (Details) $ in Thousands	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Current assets	$ 30,278	$ 16,063
Total Assets	54,028	69,035
Current liabilities	1,734	3,470
Total Liabilities and Equity	54,028	69,035
High Traction Stage [Member]
Current assets	127,651	104,024
Non-current assets	53,220	26,352
Total Assets	180,871	130,376
Current liabilities	62,538	72,972
Non-current liabilities	158,975	105,506
Shareholders’ deficit	(40,642)	(48,102)
Total Liabilities and Equity	$ 180,871	$ 130,376
Number of equity method ownership interests	9	12