Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010
Commitments and Contingencies Disclosure [Line Items]
Purchase Obligation	$ 3,851,000
Property Leases
Commitments and Contingencies Disclosure [Line Items]
Operating Leases, Rent Expense	5,481,000	5,180,000	5,030,000
Other Operating Leases and Commitments
Commitments and Contingencies Disclosure [Line Items]
Operating Costs and Expenses	$ 1,754,000	$ 1,477,000	$ 1,400,000