Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
U.S	$ (8,703)	$ (9,538)	$ (13,191)
Foreign	1,513	927	(5,826)
Income (loss) before income taxes	$ (7,190)	$ (8,611)	$ (19,017)
Effective tax rate	(3.50%)	(6.40%)	(44.30%)