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STOCK-BASED COMPENSATION (Tables)
 6 Months Ended
Sep. 30, 2019
STOCKHOLDERS' EQUITY  
Assumptions used in fair value method
    Six Months Ended  
    September 30, 2019  
Risk-free interest rates     1.35% - 2.41 %
Volatility     97% - 102 %
Expected life (years)     5.0 - 6.0  
Dividend yield      — %
Stock Option Activity
          Options Outstanding  
                Weighted  
    Shares           Average  
    Available     Number of     Exercise  
    for Grant     Shares     Prices  
Balance at April 1, 2019     1,470,092       1,529,908     $  $0.86  
Options granted     (22,686)       22,686       2.25  
Balance at June 30, 2019     1,447,406       1,552,594     $ 0.88  
    Options granted     (77,800)       77,800       2.25  
Balance at September 30, 2019     1,369,606       1,630,394     $ 0.95  
Range of outstanding and exercisable options
    Options Outstanding     Options Exercisable  
          Weighted                          
          Average                          
          Remaining     Weighted           Weighted        
          Contractual     Average           Average     Aggregate  
    Number     Life     Exercise     Number     Exercise     Intrinsic  
Range of Exercise Price   Outstanding     (in Years)     Price     Exercisable     Price     value  
$0.66 - $2.25     1,630,394       8.94     $ 0.95       1,386,172     $  0.72     $ —