Note 6 - Stockholders' Deficit - Stock Option Activity (Details) - $ / shares	9 Months Ended	12 Months Ended
Sep. 30, 2020	Dec. 31, 2019
Outstanding balance, options (in shares)	6,320,000
Outstanding balance, weighted average price per share (in dollars per share)	$ 0.33
Outstanding balance, weighted average remaining contractual term (Year)	1 year 255 days	2 years 164 days
Forfeited/cancelled, options (in shares)	(3,160,000)
Forfeited/cancelled, weighted average price per share (in dollars per share)	$ 0.33
Outstanding balance, options (in shares)	3,160,000	6,320,000
Outstanding balance, weighted average price per share (in dollars per share)	$ 0.33	$ 0.33
Vested and expected to vest, options (in shares)	3,160,000
Vested and expected to vest, weighted average price per share (in dollars per share)	$ 0.33
Vested and expected to vest, weighted average remaining contractual term (Year)	1 year 255 days
Exercisable balance, options (in shares)	3,160,000
Exercisable balance, weighted average price per share (in dollars per share)	$ 0.33
Exercisable balance, weighted average remaining contractual term (Year)	1 year 255 days

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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