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Business Segment, Geographic Area, Product and Significant Customer Information - Schedule of Net Revenues and Long-Lived Assets by Geographic Regions (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net revenues $ 184,697 $ 156,928 $ 391,050 $ 298,573  
Long-lived assets 77,544   77,544   79,659
United States [Member]
          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net revenues 107,931 86,851 225,309 161,418  
Long-lived assets 58,450   58,450   60,700
Korea [Member]
          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net revenues 17,169 16,507 44,760 30,106  
Japan [Member]
          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net revenues 14,416 12,589 31,343 26,418  
Europe [Member]
          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net revenues 18,812 18,722 38,367 37,525  
Long-lived assets 6,682   6,682   5,484
Asia (excluding Korea and Japan) [Member]
          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net revenues 26,369 22,259 51,271 43,106  
Long-lived assets $ 12,412   $ 12,412   $ 13,475