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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
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net revenues $ 573,140 $ 480,757 $ 1,127,415 $ 917,910  
Long-lived assets 207,797   207,797   $ 203,154
United States [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net revenues 281,818 244,649 558,538 462,699  
Long-lived assets 132,097   132,097   124,689
Korea [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net revenues 66,983 59,827 120,994 104,705  
Japan [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net revenues 54,087 36,865 112,361 74,657  
Europe [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net revenues 107,193 91,630 208,577 179,873  
Long-lived assets 26,622   26,622   28,820
Asia (Excluding Korea and Japan) [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net revenues 63,059 $ 47,786 126,945 $ 95,976  
Long-lived assets $ 49,078   $ 49,078   $ 49,645