Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Property, Plant and Equipment (Details)

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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 $ 138,528 $ 104,984  
Accumulated depreciation and amortization (61,439) (46,523)  
Property, plant and equipment, less capital work-in-progress 77,089 58,461  
Capital work-in-progess 13,916 3,609  
Property, plant and equipment, net 91,005 62,070  
Depreciation 14,600 7,600 5,900
Machinery and Equipment [Member]
      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 53,361 45,034  
Buildings and Improvements [Member]
      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 34,200 22,501  
Computer Equipment and Software [Member]
      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 28,131 19,873  
Office Equipment [Member]
      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 4,324 3,785  
Furniture and Fixtures [Member]
      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross 5,606 5,019  
Land [Member]
      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, gross $ 12,906 $ 8,772