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Revenue by Geographic Area (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]      
NET SALES $ 922,100 $ 539,521 $ 457,253
Taiwan      
Revenues from External Customers and Long-Lived Assets [Line Items]      
NET SALES 159,575 95,023 77,117
United States      
Revenues from External Customers and Long-Lived Assets [Line Items]      
NET SALES 53,517 42,099 63,432
Korea      
Revenues from External Customers and Long-Lived Assets [Line Items]      
NET SALES 21,569 24,261 52,885
China      
Revenues from External Customers and Long-Lived Assets [Line Items]      
NET SALES 286,605 154,789 123,261
Malaysia      
Revenues from External Customers and Long-Lived Assets [Line Items]      
NET SALES 73,264 46,319 50,663
Singapore      
Revenues from External Customers and Long-Lived Assets [Line Items]      
NET SALES 219,214 97,813 45,032
Others      
Revenues from External Customers and Long-Lived Assets [Line Items]      
NET SALES $ 108,356 $ 79,217 $ 44,863