Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

SHARE-BASED COMPENSATION - Options activities (Details)

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SHARE-BASED COMPENSATION - Options activities (Details) - Options - USD ($)
 9 Months Ended 12 Months Ended
Dec. 31, 2017
Mar. 31, 2017
Mar. 31, 2016
Number of shares      
Outstanding at the beginning of the period (in shares) 2,451,067 1,904,067 3,885,667
Granted (in shares) 50,000 900,000  
Forfeited (in shares) (50,000) (100,000)  
Expired (in shares) (74,000) (253,000) (1,981,600)
Outstanding at the end of the period (in shares) 2,377,067 2,451,067 1,904,067
Vested and expected to vest at the end of the period (in shares) 2,377,067    
Exercisable at the end of the period (in shares) 842,337    
Weighted average exercise      
Outstanding at the beginning of the period (in dollars per share) $ 2.21 $ 2.61 $ 2.66
Granted (in dollars per share) 2.35 1.71  
Forfeited (in dollars per share) 1.71 1.71  
Expired (in dollars per share) 3.60 3.60 2.72
Outstanding at the end of the period (in dollars per share) 2.18 $ 2.21 $ 2.61
Vested and expected to vest at the end of the period (in dollars per share) 2.18    
Exercisable at the end of the period (in dollars per share) $ 2.54    
Weighted remaining contractual Years      
Vested and expected to vest at the end of the period 7 years 5 months 16 days    
Exercisable at the end of the period 6 years 2 months 23 days    
Aggregate intrinsic value      
Vested and expected to vest at the end of the period (in dollars) $ 556,612    
Exercisable at the end of the period (in dollars) $ 51,431