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Earnings per share (Tables)
 12 Months Ended
Mar. 31, 2018
Text block1 [abstract]  
Computation of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share:

 

     Year ended March 31,  
     2018      2017      2016  

Numerator:

         

Profit

    $ 86,436      $ 37,763      $ 59,880  

Denominator:

         

Basic weighted average ordinary shares outstanding

      50,388,440        50,582,852        51,372,117  

Dilutive impact of equivalent stock options and RSUs

      2,527,160        2,357,456        2,267,553  

Diluted weighted average ordinary shares outstanding

      52,915,600        52,940,308        53,639,670