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Accounts Receivable, Net (Detail) - USD ($)
$ in Thousands
Apr. 03, 2020
Jan. 03, 2020
Accounts Notes And Loans Receivable [Line Items]    
Allowance for contract losses and doubtful accounts $ (6,192) $ (4,295)
Total accounts receivable, net 127,212 120,138
Billed accounts receivable    
Accounts Notes And Loans Receivable [Line Items]    
Accounts Receivable 92,953 85,579
Unbilled accounts receivable    
Accounts Notes And Loans Receivable [Line Items]    
Accounts Receivable $ 40,451 $ 38,854