Commitments and Contingencies - Additional Information (Detail)		12 Months Ended
	Dec. 14, 2015 USD ($) ft² a	Jan. 01, 2016 USD ($)	Jan. 02, 2015 USD ($)	Jan. 03, 2014 USD ($)
Commitments And Contingencies Disclosure [Line Items]
Purchase Obligation		$ 432,000
Area of Warehouse storage Space | ft²	27,000
Area of Land | a	1.1
Payments To Acquire Property Plant and Equipment		5,379,000	$ 4,947,000	$ 6,226,000
Land [Member]
Commitments And Contingencies Disclosure [Line Items]
Payments To Acquire Property Plant and Equipment	$ 8,250,000
Property Leases [Member]
Commitments And Contingencies Disclosure [Line Items]
Operating Leases, Rent Expense		6,202,000	5,951,000	5,929,000
Other Operating Leases and Commitments [Member]
Commitments And Contingencies Disclosure [Line Items]
Operating Costs and Expenses		$ 1,794,000	$ 1,965,000	$ 1,704,000