Credit Facility (Details Textuals) (USD $)	3 Months Ended	9 Months Ended
	Sep. 27, 2011	Sep. 25, 2012	Sep. 27, 2011	Dec. 27, 2011
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 250,000,000
Line of Credit Facility, Amount Outstanding				0
Commitment fees incurred	100,000	300,000	300,000
Accrued interest to the commitment fees		$ 100,000		$ 100,000