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Accrued Liabilities (Tables)
12 Months Ended
Dec. 31, 2011
Accrued Liabilities  
Schedule of other current liabilities

 

(in thousands)
  2012   2011  

Payroll and incentive compensation

  $ 10,695   $ 10,435  

Union dues and benefits

    6,210     6,617  

Profit sharing and thrift plan

    4,679     2,780  

Taxes, other than income taxes

    5,771     3,929  

Other

    4,885     5,317  
           

 

  $ 32,240   $ 29,078