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6. STOCK-BASED COMPENSATION COSTS (Tables)
9 Months Ended
Dec. 31, 2015
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]  
Stock-based compensation expense
   Three Months Ended   Nine Months Ended 
   December 31,   December 31, 
   2015   2014   2015   2014 
   $   $   $   $ 
Research and development   2,782    2,547    13,270    7,641 
Selling and administrative   4,358    9,982    54,691    29,946 
Total stock-based compensation expense   7,140    12,529    67,961    37,587