Note 3 - Summary of Significant Accounting Policies (Details Textual) - USD ($)		3 Months Ended			9 Months Ended
		Sep. 30, 2020		Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019	Dec. 31, 2019
Net Income (Loss) Attributable to Parent, Total		$ (1,333,000)		$ (388,000)	$ (4,611,000)		$ (1,905,000)
Cash and Cash Equivalents, at Carrying Value, Ending Balance		500,000	[1]		500,000	[1]		$ 1,603,000
Research and Development Expense, Total		113,000		239,000	443,000		599,000
Operating Lease, Right-of-Use Asset	[1]	4,000			4,000			$ 12,000
Operating Lease, Liability, Total		0			0
Operating Lease, Cost		37,000		66,000	121,000		284,000
Short-term Lease, Cost		$ 35,000		$ 64,000	$ 114,000		$ 194,000

[1] All of the VIEs' assets can be used to settle obligations of their primary beneficiary. Furthermore, liabilities recognized as a result of consolidating these VIEs do not represent additional claims on the Company's general assets (Note 2).