Long Term Debt - Interest Expense, Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Debt Disclosure [Abstract]
Long-term debt	$ 15,644	$ 17,351	$ 10,562
Debt fees	290	296	269
Amortization and write-offs of deferred financing costs and debt discount	4,642	2,721	1,014
Interest income	(236)	(105)	(70)
Interest expense	20,340	20,263	11,775
Capitalized interest	(61)	(138)	(70)
Interest expense, net	$ 20,279	$ 20,125	$ 11,705