Credit Facility (Details Textuals) (USD $)	3 Months Ended
	Mar. 26, 2013	Mar. 27, 2012	Dec. 25, 2012
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 250,000,000
Line of Credit Facility, Amount Outstanding	0		0
Commitment fees incurred	100,000	100,000
Accrued interest to the commitment fees	$ 100,000		$ 100,000