Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
	Jan. 03, 2014	Dec. 28, 2012	Dec. 30, 2011
Commitments And Contingencies Disclosure [Line Items]
Purchase Obligation, Total	$ 350,000
Other Operating Leases and Commitments
Commitments And Contingencies Disclosure [Line Items]
Operating Costs and Expenses	1,704,000	1,754,000	1,477,000
Property Leases
Commitments And Contingencies Disclosure [Line Items]
Operating Leases, Rent Expense	$ 5,929,000	$ 5,481,000	$ 5,180,000