Annual report pursuant to Section 13 and 15(d)

Property and Equipment (Details)

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Property and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Property and equipment      
Property and equipment, gross $ 42,075 $ 30,748  
Accumulated depreciation (17,514) (10,189)  
Property and equipment, net 24,561 20,559  
Depreciation 7,327 5,286 4,704
Land
     
Property and equipment      
Property and equipment, gross 172 172  
Leasehold improvements
     
Property and equipment      
Property and equipment, gross 3,338 2,803  
Machinery and equipment
     
Property and equipment      
Property and equipment, gross $ 38,565 $ 27,773