Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	Jul. 03, 2015	Jan. 02, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for doubtful accounts and contract losses	$ (3,485)	$ (3,386)
Total accounts receivable, net	93,543	86,368
Unbilled accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	33,387	26,423
Billed accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 63,641	$ 63,331