Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	Jul. 03, 2020	Jan. 03, 2020
Accounts Notes And Loans Receivable [Line Items]
Allowance for contract losses and doubtful accounts	$ (6,155)	$ (4,295)
Total accounts receivable, net	109,341	120,138
Billed accounts receivable
Accounts Notes And Loans Receivable [Line Items]
Accounts Receivable	73,242	85,579
Unbilled accounts receivable
Accounts Notes And Loans Receivable [Line Items]
Accounts Receivable	$ 42,254	$ 38,854