Commitments (Schedule Of Contractual Cash Obligations Relating To Existing Capital Leases) (Details) (Capital Lease Obligations [Member], USD $) In Thousands, unless otherwise specified	Dec. 25, 2011
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
One year	$ 1,755
Two years	1,581
Three years	1,459
Four years	1,468
Five years	9,616
Total	15,879
Less: Interest on capital leases	1,017
Less: Current portion of capital leases	1,472
Capital leases	$ 13,390

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 and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date.

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The total of contractually required rental payments on leases meeting the criteria for capitalization.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within one year of the balance sheet date.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the fifth year from the balance sheet date.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the fourth year from the balance sheet date.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the third year from the balance sheet date.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the second year from the balance sheet date.

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Amount necessary to reduce net minimum lease payments to present value calculated at the lesser of the interest rate implicit in the lease (if known) or the entity's incremental borrowing rate (as defined) at inception of the lease.

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