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Property, Plant and Equipment, Net (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Property, plant and equipment [Abstract]      
Property, plant and equipment, gross $ 78,505 $ 72,947  
Less: accumulated depreciation and amortization (40,884) (35,712)  
Property, plant and equipment, net 37,621 37,235  
Depreciation and amortization expense 5,470 3,927 3,410
Building [Member]
     
Property, plant and equipment [Abstract]      
Property, plant and equipment, gross 30,369 28,089  
Machinery and equipment [Member]
     
Property, plant and equipment [Abstract]      
Property, plant and equipment, gross 40,764 37,334  
Leasehold improvements [Member]
     
Property, plant and equipment [Abstract]      
Property, plant and equipment, gross 4,493 3,578  
Construction in progress [Member]
     
Property, plant and equipment [Abstract]      
Property, plant and equipment, gross $ 2,879 $ 3,946