Receivables, Net (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customers, trade	$ 39,059	$ 31,043
Other receivables	1,321	1,642
Gross receivables	40,380	32,685
Less allowance for doubtful accounts	(180)	(216)
Net receivables	$ 40,200	$ 32,469