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Distribution of Stock-Based Compensation Plan Expense (Tables)
 3 Months Ended
Jun. 30, 2016
Distribution Of Stock-based Compensation Plan Expense Tables  
Schedule Of Stock-Based Compensation Expense By Statement Of Operations Line Item

The following table summarizes stock-based compensation expense (in thousands):

      Three Months Ended
      June 30,
      2016     2015
Cost of service revenue   $ 360    $ 219 
Cost of product revenue     -      - 
Research and development     887      531 
Sales and marketing     1,915      1,197 
General and administrative     1,889      1,075 
Total stock-based compensation expense related to employee            
     stock options and employee stock purchases, pre-tax     5,051      3,022 
             
Tax benefit     -      - 
Stock-based compensation expense related to employee            
     stock options and employee stock purchases, net of tax   $ 5,051    $ 3,022