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Stock Options - Summary of Stock Options Activity (Details) - $ / shares
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Number of Shares, Granted 42,000 40,000
Number of Shares, Forfeited or Expired
Stock Options [Member]    
Number of Shares Outstanding, Beginning Balance 185,700 148,600
Number of Shares, Granted 42,000 40,000
Number of Shares, Exercised 2,900
Number of Shares, Forfeited or Expired
Number of Shares, Ending Balance 227,700 185,700
Number of Shares, Vested 155,700  
Number of Shares, Exercisable 155,700  
Weighted Average Exercise Price Per Share, Beginning Balance $ 6.18 $ 4.84
Weighted Average Exercise Price Per Share, Granted
Weighted Average Exercise Price Per Share, Exercised 8.56
Weighted Average Exercise Price Per Share, Forfeited or Expired
Weighted Average Exercise Price Per Share, Ending Balance 5.65 $ 6.18
Weighted Average Exercise Price Per Share, Vested 6.44  
Weighted Average Exercise Price Per Share, Exercisable $ 6.44  
Weighted Aggregate Average Remaining Contract Life in Years, Beginning Balance 4 years 8 months 5 days 4 years 4 months 2 days
Weighted Aggregate Average Remaining Contract Life in Years, Ending Balance 4 years 9 months 29 days 4 years 8 months 5 days
Weighted Aggregate Average Remaining Contract Life in Years, Vested 2 years 9 months 3 days  
Weighted Aggregate Average Remaining Contract Life in Years, Exercisable 2 years 9 months 3 days