Activity in Inventory Reserve Allowance (Detail) - Inventory Valuation Reserve - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Inventory [Line Items]
Beginning Balance	$ 159	$ 93	$ 38
Charged to Expense	776	1,074	1,210
Write-Offs and Other	697	1,008	1,155
Ending Balance	$ 238	$ 159	$ 93