Stock Options - Summary of Stock Options Activity (Details) - $ / shares	3 Months Ended	12 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Number of Options, Outstanding Beginning Balance	11,900,000	8,250,000
Number of Options, Granted		4,070,000
Number of Options, Exercised	(750,000)	(320,000)
Number of Options, Expired	(150,000)	(100,000)
Number of Options, Outstanding Ending Balance	11,000,000	11,900,000
Weighted Average Exercise Price, Outstanding Beginning Balance	$ 0.11	$ 0.13
Weighted Average Exercise Price, Granted		0.07
Weighted Average Exercise Price, Exercised	0.18	0.06
Weighted Average Exercise Price, Expired	0.18	0.19
Weighted Average Exercise Price, Outstanding Ending Balance	$ 0.10	$ 0.11

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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

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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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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 of the plan that expired.

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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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