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Other Noncurrent Liabilities
 12 Months Ended
Dec. 31, 2014
Other Noncurrent Liabilities [Abstract]  
Other Noncurrent Liabilities

16. Other Noncurrent Liabilities

As of December 31 of each year, Other noncurrent liabilities consists of:

       
(in thousands)   2014     2013  
           
Pension liabilities     $37,867         $40,981  
Postretirement benefits other than pensions     60,237         56,052  
Interest rate swap agreement     1,411         3,119  
Incentive and deferred compensation     2,730         4,960  
Other     834         902  
Total     $103,079         $106,014