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Property, Plant, and Equipment Property, Plant, and Equipment (Tables)
 12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property, plant and equipment
Property, plant and equipment, at December 31, consist of the following:
 
 
2013
2012
Land and improvements
$
16,021

$
13,021

Buildings and improvements
340,609

324,497

Machinery and equipment
1,464,532

1,404,928

Construction in progress
221,101

175,283

 
2,042,263

1,917,729

Less accumulated depreciation
(794,602
)
(729,515
)
Property, plant and equipment - net
$
1,247,661

$
1,188,214