Credit Facility Credit Facility (Details Textuals) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 25, 2012	Dec. 27, 2011
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 250,000,000
Debt Instrument, Basis Spread on Variable Rate	0.50%
Consolidated Leverage Ratio	3.00
Consolidated Leverage Ratio Denominator	1.00
Consolidated Fixed Charge Coverage Ratio	2.00
Consolidated Fixed Charge Coverage Denominator	1
Line of Credit Facility, Expiration Date	Nov. 30, 2017
Line of Credit Facility, Additional Borrowing Increments	150,000,000
Line of Credit Facility, Amount Outstanding	0	0
Line of Credit Facility, Commitment Fee Amount	300,000	400,000	400,000
Accrued interest related to commitment fees	100,000	100,000
Unamortized Debt Issuance Expense	$ 800,000	$ 1,100,000
Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Commitment Fee Percentage (as a percent)	0.10%
Minimum [Member] | LIBOR Loan [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Minimum [Member] | Base Rate Loan [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.00%
Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Commitment Fee Percentage (as a percent)	0.25%
Maximum [Member] | LIBOR Loan [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Maximum [Member] | Base Rate Loan [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%