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NET INCOME PER SHARE
 9 Months Ended
Sep. 30, 2014
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 September 30, Nine Months Ended September 30,
    2014 2013 2014 2013
Shares used in basic earnings per share calculation 49,093  50,732  49,493  51,643
 Effect of dilutive securities:       
  Stock options 420  425  420  412
  Restricted stock units 427  521  425  444
  Performance-based restricted stock units -  -  -  -
   Total effects of dilutive securities 847  946  845  856
Shares used in dilutive earnings per share calculation 49,940  51,678  50,338  52,499
           

For the three months ended September 30, 2014 and 2013, 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 nine months ended September 30, 2014 and 2013, 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 effect would have been anti-dilutive. For the three months ended September 30, 2014 and 2013, restricted stock units (“RSUs”) of 0.4 million and 0.2 million, respectively, were outstanding, but not included in the computation of diluted net income per share because the effect would have been anti-dilutive. For the nine months ended September 30, 2014 and 2013, RSUs of 0.2 million and 0.2 million, respectively, were outstanding, but not included in the computation of diluted net income per share because the effect would have been anti-dilutive.