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Property, Plant and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 325,893 $ 249,080  
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment (101,688) (79,304)  
Property, plant and equipment, net 224,205 169,776 137,301
Depreciation 21,159 17,404 14,539
Land, Buildings and Improvements [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 139,962 107,410  
Land, Buildings and Improvements [Member] | Minimum [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 20 years    
Land, Buildings and Improvements [Member] | Maximum [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 35 years    
Machinery and Equipment [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 124,023 96,362  
Machinery and Equipment [Member] | Minimum [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 3 years    
Machinery and Equipment [Member] | Maximum [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 12 years    
Computer equipment, furniture and fixtures [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 24,659 20,238  
Computer equipment, furniture and fixtures [Member] | Minimum [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 3 years    
Computer equipment, furniture and fixtures [Member] | Maximum [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Useful Life 7 years    
Construction in Progress [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 37,249 $ 25,070