Debt (Details Textual) (USD $)	3 Months Ended		12 Months Ended		3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended			12 Months Ended
	Jun. 26, 2012	Mar. 27, 2012	Dec. 25, 2012	Dec. 25, 2012 Senior Notes [Member]	Jun. 26, 2012 Term Loan [Member]	Dec. 25, 2012 Term Loan [Member]	Dec. 27, 2011 Term Loan [Member]	Mar. 27, 2012 Old Term Loan [Member]	Dec. 25, 2012 Old Term Loan [Member]	Jun. 26, 2012 Revolving Facility ($100 million) [Member]	Dec. 25, 2012 Revolving Facility ($100 million) [Member]	Dec. 27, 2011 Revolving Facility ($100 million) [Member]	Dec. 27, 2011 Old Revolving Credit Facility [Member]	Dec. 25, 2012 London Interbank Offered Rate (LIBOR) [Member] Refinancing of Debt [Member] Revolving Facility ($100 million) [Member]	Dec. 25, 2012 Base Rate [Member] Refinancing of Debt [Member] Revolving Facility ($100 million) [Member]
Debt (Textual) [Abstract]
Debt instrument redemption description			Effective January 15, 2016, these Notes may be redeemed at a redemption price of 105.250% plus accrued and unpaid interest until January 15, 2017, when the redemption price becomes 102.625% plus accrued and unpaid interest and remains such until January 15, 2018
Line of credit facility, interest rate description			The refinancing lowered the spread over LIBOR to 4.0% from 5.25% on the Term Loan borrowings, and lowered the Term Loan LIBOR floor to 1.25% from 1.5%. The combined weighted average interest rate was 5.25% per annum at September 25, 2012
Revolving facility											$ 100,000,000		$ 75,000,000
Borrowing capacity available under our revolving line of credit											81,100,000	100,000,000	57,300,000
Term loan						375,000,000	375,000,000
Outstanding letters of credit			18,900,000								18,900,000		17,700,000
Commitment fee percentage			0.50%
Interest is paid at base rate	4.00%					3.25%			4.00%					3.25%
Interest is paid at LIBOR plus		5.25%
Interest is paid at LIBOR floor					1.25%			1.50%
Basis of spread on base rate change			1.75%
Line of credit facility basis of spread on base rate loan															2.25%
Soft call premium	3,800,000		3,700,000
Debt issuance cost	3,200,000		2,600,000							1,100,000	900,000
Debt extinguishment expense	1,700,000		2,000,000
Additional debt issuance cost	3,400,000		7,100,000
Extinguishment of debt, amount			5,000,000
Weighted average interest rate			4.50%
Maturity date of debt instruments senior notes				Jan. 15, 2016
Percentage of premium over the senior notes principal amount				1.00%
Quarterly amortization of term loan			$ 937,500
Amortizes rate of principal amount			1.00%
Interest on senior notes				10.50%
Redemption price as a percentage of senior notes principal amounts				100.00%
Senior note redemption percentage one			105.25%
Senior note redemption percentage two			102.625%
Credit agreement period			95 days