Shareholders' Equity - Summary of Stock Option Activity (Details) - Stock Option [Member] - $ / shares		12 Months Ended
		Mar. 31, 2021		Mar. 31, 2020
Number of Options, Balance at Beginning of Year		2,230,000	[1]	2,210,000
Number of Options, Granted		100,000		100,000
Number of Options, Exercised		(440,000)		(60,000)
Number of Options, Forfeited		(210,000)		(20,000)
Number of Options, Balance at End of Year	[1]	1,680,000		2,230,000
Number of Options, Exercisable at End of Year		1,580,000		2,130,000
Weighted Average Exercise Price, Balance at Beginning of Year		$ 0.26	[1]	$ 0.25
Weighted Average Exercise Price, Granted		0.29		0.38
Weighted Average Exercise Price, Exercised		0.06		0.17
Weighted Average Exercise Price, Forfeited		0.17		0.03
Weighted Average Exercise Price, Balance at End of Year	[1]	0.32		0.26
Weighted Average Exercise Price, Options Exercisable at End of Year		$ 0.33		$ 0.25

[1] Total number of options outstanding as of March 31, 2021 includes 600,000 options issued to five current and two former directors as compensation and 1,040,000 options issued to key employees that were not issued from the Plan.