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Earnings per share (Tables)
 12 Months Ended
Mar. 31, 2019
Text block [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,  
     2019      2018      2017  

Numerator:

         

Profit

    $ 105,433    $ 86,436      $ 37,763  

Denominator:

         

Basic weighted average ordinary shares outstanding

      50,139,389      50,388,440        50,582,852  

Dilutive impact of equivalent stock options and RSUs

      2,138,724      2,527,160        2,357,456  

Diluted weighted average ordinary shares outstanding

      52,278,113      52,915,600        52,940,308