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Shareholders' Equity (Details 2) - Employee Stock Option [Member]
12 Months Ended
Mar. 31, 2021
$ / shares
shares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number Outstanding | shares 1,036,000
Weighted-Average Remaining Contractual Life 2 years 4 months 24 days
Weighted-Average Exercise Price per Share | $ / shares $ 0.39
Number Exercisable | shares 575,634
Exercisable Weighted-Average Exercise Price per Share | $ / shares $ 0.36
$0.30 - $0.35 [Member]  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number Outstanding | shares 550,000
Weighted-Average Remaining Contractual Life 2 years 3 months 19 days
Weighted-Average Exercise Price per Share | $ / shares $ 0.33
Number Exercisable | shares 341,878
Exercisable Weighted-Average Exercise Price per Share | $ / shares $ 0.32
$0.38 - $0.50 [Member]  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number Outstanding | shares 431,000
Weighted-Average Remaining Contractual Life 2 years 2 months 12 days
Weighted-Average Exercise Price per Share | $ / shares $ 0.43
Number Exercisable | shares 226,056
Exercisable Weighted-Average Exercise Price per Share | $ / shares $ 0.42
$0.54 - $0.67 [Member]  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number Outstanding | shares 55,000
Weighted-Average Remaining Contractual Life 4 years 10 months 25 days
Weighted-Average Exercise Price per Share | $ / shares $ 0.59
Number Exercisable | shares 7,700
Exercisable Weighted-Average Exercise Price per Share | $ / shares $ 0.55