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Cash and Cash Equivalents (Tables)
12 Months Ended
Mar. 31, 2020
Cash and Cash Equivalents [Abstract]  
Schedule of cash and cash equivalents

   As of March 31, 
   2019   2020 
   $   $ 
         
Cash on hand   1    12 
Bank deposits   6,874    7,748 
Short term investments   1,952    1,067 
    8,827    8,827