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Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]
The following table summarizes the components of property, plant and equipment:
 
 
 
 
December 31,
Classification
 
Estimated Useful Life
 
2014
 
2013
Land and buildings
 
20-35 years
 
$
161,986

 
$
139,962

Machinery and equipment
 
3-12 years
 
165,379

 
124,023

Computer equipment, furniture and fixtures
 
3-7 years
 
34,866

 
24,659

Construction in process
 
 
 
23,626

 
37,249

Total property, plant and equipment, gross
 
 
 
385,857

 
325,893

Less: Accumulated depreciation
 
 
 
(128,212
)
 
(101,688
)
Total property, plant and equipment, net
 
 
 
$
257,645

 
$
224,205