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Accounts Receivable, Net - Reconciliation of Beginning and Ending Amount of Allowance for Contract Losses and Doubtful Accounts (Detail) - USD ($)
$ in Thousands
9 Months Ended
Oct. 02, 2020
Sep. 27, 2019
Receivables [Abstract]    
Balance at January 3, 2020 $ 4,295  
Provision for contract losses and doubtful accounts 2,890 $ 2,146
Write-offs (1,351)  
Balance at October 2, 2020 $ 5,834