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Shareholder's Equity (Tables)
 12 Months Ended
Dec. 31, 2012
Shareholder's Equity [Abstract]  
Summary of outstanding shares of common stock
                         
    Year Ended December 31,  

In thousands

     2012       2011       2010  

Shares outstanding at beginning of year

     42,650       45,976       45,706  

Shares repurchased

     (374 )      (3,505 )      –  

Treasury shares issued for:

                        

Restricted stock awards

     76       14       112  

401(k) plan

     152       143       132  

Director compensation

     –       12       12  

Employee stock options exercised

     280       10       14  

Shares outstanding at end of year

     42,784       42,650       45,976