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Acquisitions and Divestitures (Tables)
12 Months Ended
Dec. 31, 2012
Business Combinations [Abstract]  
Summary of Results of Discontinued Operations

The following table is a summary of the results of discontinued operations:

   
 December 31,
In thousands 2012 2011 2010
Net sales $  $13,255  $21,894 
Income before income taxes     1,374   1,155 
Income tax expense     499   415 
Income from discontinued operations     875   740 
Gain on sale of discontinued operations, net of tax of $2,229     3,857    
Income from discontinued operations, net of tax $  $4,732  $740