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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2015
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Table

Property, plant and equipment consist of the following (in thousands):

   December 31,
   2015 2014
Land and land improvements $38,735 $39,688
Buildings and leasehold improvements  265,300  256,603
Production and other equipment  380,016  367,716
Construction in progress  20,477  20,606
 Total property, plant and equipment  704,528  684,613
Less: accumulated depreciation and amortization  (371,173)  (363,030)
 Property, plant and equipment, net $333,355 $321,583