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Accounting for stock-based compensation (Tables)
3 Months Ended
Mar. 31, 2016
Stock-Based Compensation Expense

Total stock-based compensation expense recognized in the accompanying condensed consolidated statements of operations for the three months ended March 31, 2016 and 2015 was as follows (in thousands):

 

     Three months ended March 31,  
     2016      2015  

Stock-based compensation

   $ 1,273       $ 2,003