Stock Options And Warrants (Summary Of Stock Option Activity) (Details) - $ / shares	3 Months Ended	12 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Options
Outstanding -beginning of period		150,275,799	150,275,799
Granted	368,000,000	283,000,000
Exercised	10,442,467
Forfeited
Outstanding - end of period	787,233,332	433,275,799
Exercisable at the end of the period	265,946,574	163,134,246
Weighted average exercise price
Outstanding -beginning of period	$ 0.0052	$ 0.016	$ 0.016
Granted	0.0068	0.002
Exercised	0.0080
Forfeited
Outstanding - end of period	0.0058	0.007	$ 0.0052
Excercisable at the end of the period	0.0074	0.014
Weighted average fair value of options granted during the period	$ 2,502,400	$ 509,400

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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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

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-Name Accounting Standards Codification
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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