Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	Apr. 02, 2021	Jan. 01, 2021
Accounts Notes And Loans Receivable [Line Items]
Allowance for contract losses and doubtful accounts	$ (4,481)	$ (3,995)
Total accounts receivable, net	124,211	111,565
Billed accounts receivable
Accounts Notes And Loans Receivable [Line Items]
Accounts Receivable	78,805	80,298
Unbilled accounts receivable
Accounts Notes And Loans Receivable [Line Items]
Accounts Receivable	$ 49,887	$ 35,262