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Basis of Presentation and Summary of Significant Accounting Policies - Allowance for Doubtful Accounts Roll Forward (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Allowance for Doubtful Accounts Receivable [Roll Forward]    
Beginning balance $ 9,560 $ 7,663
Impact of CECL Adoption 985  
Additions 6,664 3,793
Deduction (3,901) (3,426)
Ending balance $ 13,308 $ 8,030