Balance Sheet Classification of Contingent Consideration Liability (Detail) - USD ($) $ in Thousands	Jul. 02, 2016	Jan. 02, 2016
Business Combination, Transactions [Line Items]
Other accrued liabilities	$ 748	$ 890
Other accrued liabilities
Business Combination, Transactions [Line Items]
Other accrued liabilities	106	179
Other long-term liabilities
Business Combination, Transactions [Line Items]
Other accrued liabilities	$ 642	$ 711