Fair Value Measurement, Financial Instruments And Risk Management (Carrying And Fair Values Of Non-Current Financial Assets And Liabilities Not Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 24, 2012		Dec. 25, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior secured notes, Carrying Amount	$ 126,272		$ 129,594
Senior Secured Credit Facility [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior secured credit facility, Carrying Amount	49,636	[1]	52,248	[1]
Senior Secured Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior secured notes, Carrying Amount	75,000	[1]	75,000	[1]
Estimated Fair Value [Member] | Senior Secured Credit Facility [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior secured credit facility, Estimated Fair Value	49,636	[1]	52,248	[1]
Estimated Fair Value [Member] | Senior Secured Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior secured notes, Estimated Fair Value	$ 69,847	[1]	$ 75,686	[1]

[1] The carrying amounts are reported on the balance sheet under the indicated captions.