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Components of and Changes in Accumulated Other Comprehensive Income, Net of Related Income Taxes (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 27, 2021
Mar. 28, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance $ 691,835  
Other comprehensive loss (954) $ (9,481)
Ending Balance 762,919  
Unrealized Holding (Losses) Gains on Available-for-Sale Securities    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 2,808  
Other comprehensive loss (534)  
Ending Balance 2,274  
Foreign Currency Translation    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (4,807)  
Other comprehensive loss (420)  
Ending Balance (5,227)  
Accumulated Other Comprehensive Income (Loss)    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (1,999)  
Other comprehensive loss (954)  
Ending Balance $ (2,953)