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NET INCOME PER SHARE
3 Months Ended
Mar. 31, 2015
NET INCOME PER SHARE [Abstract]  
NET INCOME PER SHARE

(14)       NET INCOME PER SHARE

The following table sets forth the computation of basic and diluted shares for the periods indicated (in thousands):

     Three Months Ended March 31,
     2015 2014
Shares used in basic earnings per share calculation  48,370  50,045
 Effect of dilutive securities:    
  Stock options  384  411
  Restricted stock units  401  517
  Performance-based restricted stock units  3  -
   Total effects of dilutive securities  788  928
Shares used in dilutive earnings per share calculation  49,158  50,973
        

For the three months ended March 31, 2015 and 2014, options to purchase 0.1 million and 0.1 million shares of common stock, respectively, were outstanding, but not included in the computation of diluted net income per share because the exercise price exceeded the value of the shares and the effect would have been anti–dilutive. For the three months ended March 31, 2015 and 2014, restricted stock units (“RSUs”) of 0.5 million and 0.3 million, respectively, were outstanding, but not included in the computation of diluted net income per share because the effect would have been anti-dilutive.