Long-term Debt (Schedule of Long-term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 25, 2013	Dec. 26, 2012
Debt Instrument [Line Items]
Capital lease obligations	$ 20,073	$ 20,134
Total long-term debt	173,073	190,134
Less current maturities and mandatory prepayments	7,150	12,681
Noncurrent portion of long-term debt	165,923	177,453
Revolving loans due April 24, 2018 [Member]
Debt Instrument [Line Items]
Long-term debt	95,250	0
Term loans due April 24, 2018 [Member]
Debt Instrument [Line Items]
Long-term debt	57,750	0
Term loans due April 12 2017 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 170,000

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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