Note 10 - Shareholders' Deficit / Stock Activity (Details Textual) - $ / shares $ / shares in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Common Stock, No Par Value (in dollars per share)	$ 0	$ 0	$ 0
Stock Issued During Period, Shares, Employment Settlement Agreement (in shares)	5,350,444
Stock Issued During Period, Shares, New Issues (in shares)		33,000
Common Stock, Earned (in shares)			10,000
Common Stock, Capital Shares Reserved for Future Issuance (in shares)			1,085,343