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Components of Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Schedule of Intangible Assets Disclosure [Line Items]      
Goodwill, Gross $ 5,085 $ 5,085  
Goodwill, Accumulated Impairment Loss        
Goodwill, Net 5,085 5,085 2,673
Indefinite-Lived Trade Names, Gross 18,364 18,364  
Indefinite-Lived Trade Names, Accumulated Impairment Loss        
Indefinite-Lived Trade Names, Net 18,364 18,364  
Intangible Assets, Gross (Including Goodwill) 68,342 68,342  
Finite-Lived Intangible Assets, Accumulated Amortization (13,193) (10,500)  
Intangible Assets, Net (Including Goodwill) 55,149 57,842 46,937
License
      
Schedule of Intangible Assets Disclosure [Line Items]      
Finite-Lived Intangible Assets, Gross 15,847 15,847  
Finite-Lived Intangible Assets, Accumulated Amortization (7,551) (7,096)  
Finite-Lived Intangible Assets, Net 8,296 8,751  
Trade Names
      
Schedule of Intangible Assets Disclosure [Line Items]      
Finite-Lived Intangible Assets, Gross 10,056 10,056  
Finite-Lived Intangible Assets, Accumulated Amortization (2,677) (1,800)  
Finite-Lived Intangible Assets, Net 7,379 8,256  
Customer Relationships
      
Schedule of Intangible Assets Disclosure [Line Items]      
Finite-Lived Intangible Assets, Gross 18,406 18,406  
Finite-Lived Intangible Assets, Accumulated Amortization (2,736) (1,409)  
Finite-Lived Intangible Assets, Net 15,670 16,997  
Patents
      
Schedule of Intangible Assets Disclosure [Line Items]      
Finite-Lived Intangible Assets, Gross 584 584  
Finite-Lived Intangible Assets, Accumulated Amortization (229) (195)  
Finite-Lived Intangible Assets, Net $ 355 $ 389