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Acquisitions and Divestitures (Tables)
6 Months Ended
Jun. 30, 2011
Acquisitions and Divestitures [Abstract]  
Classification of assets and liabilities held for sale
                 
 
    December 31     June 30  
in thousands   2010     2010  
 
           
Held for Sale
               
Current assets
    $3,460       $3,695  
Property, plant & equipment, net
    9,625       11,016  
Other assets
    122       153  
 
           
Total assets held for sale
    $13,207       $14,864  
 
           
 
Current liabilities
    $116       $409  
 
           
Total liabilities of assets held for sale
    $116       $409