Income Taxes (Details Narrative) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Note 10 - Income Taxes (Details) [Line Items]
Federal income tax rate	21.00%	21.00%
Valuation allowance, deferred tax asset, increase (decrease), amount	$ 276,000	$ 139,000
Percentage of cumulative ownership	50.00%
Domestic Tax Authority [Member] | Research Tax Credit Carryforward [Member]
Note 10 - Income Taxes (Details) [Line Items]
Operating loss expiration date	Expire in 2018
Tax credit carryforward, amount	$ 900,000
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Note 10 - Income Taxes (Details) [Line Items]
Operating loss carryforwards	$ 62,900,000
Operating loss expiration date	Expire in 2019
State and Local Jurisdiction [Member] | California Franchise Tax Board [Member]
Note 10 - Income Taxes (Details) [Line Items]
Operating loss carryforwards	$ 6,900,000
Operating loss expiration date	Expire in 2028