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4. Stock-based Compensation (Tables)
9 Months Ended
Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of the grant-date fair value of stock options granted and the related assumptions used in the Binomial models for stock options granted
  Nine Months Ended
  December 31
  2014 2013
Grant-date fair value $ 5.59 $4.75
Volatility factor 76.23% 77.01%
Dividend yield - -
Risk-free interest rate 2.52% 1.74%
Expected term (in years) 10 7
Summary of activity of stock options
    Number of Shares   Weighted Average Exercise Price   Weighted Average Remaining Contract Life in Years   Aggregate Intrinsic Value
Outstanding at March 31, 2014 113,600   $         6.35   7.66   $  154,062
  Granted 40,000   7.00        
  Exercised -   -        
  Forfeited or Expired -   -        
Outstanding at December 31, 2014  153,600   $         6.52   7.61   $              -
               
Vested at December 31, 2014 77,350   $         6.42   6.44   $              -
Exercisable at December 31, 2014 77,350   $         6.42   6.44   $              -