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Earnings Per Share
 12 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
EARNINGS PER SHARE
6. EARNINGS PER SHARE

The following table sets forth the details of basic and diluted earnings per share (EPS):

 

                         
    Year ended Decmber 31,  

In thousands, except per share

     2012       2011       2010  

Net income

   $ 59,379     $ 42,694     $ 54,434  

Weighted average common shares outstanding used in basic EPS

     42,851       45,228       45,922  

Common shares issuable upon exercise of dilutive stock options and PSAs / RSUs

     821       566       452  

Weighted average common shares outstanding and common share equivalents used in diluted EPS

     43,672       45,794       46,374  

Earnings per share

                        

Basic

   $ 1.39     $ 0.94     $ 1.19  

Diluted

     1.36       0.93       1.17  

The following table sets forth the potential common shares outstanding for stock options and restricted stock units that were not included in the computation of diluted EPS for the period indicated, because their effect would be anti-dilutive:

 

                         
        Year ended Decmber 31,  
     in thousands   2012     2011     2010  

Potential common shares

     8       891       1,405