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Intangible Assets, Net - Schedule of Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 54,496 $ 49,672
Accumulated Amortization (9,090) (7,716)
Net 45,406 41,956
Patents and Related Technologies
   
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 34,772 34,772
Accumulated Amortization (9,090) (7,716)
Net 25,682 27,056
In- Process Research and Development
   
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 19,724 14,900
Net $ 19,724 $ 14,900