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	Dec. 25, 2011		Dec. 26, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 129,594	[1]	$ 121,740	[1]
Senior Secured Credit Facility [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Line of Credit, Noncurrent	52,248	[2]	42,687	[2]
Senior Secured Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	75,000	[2]	75,000	[2]
Estimated Fair Value [Member] | Senior Secured Credit Facility [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Line of Credit, Noncurrent	52,248	[2]	42,687	[2]
Estimated Fair Value [Member] | Senior Secured Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 75,686	[2]	$ 75,787	[2]

[1] The weighted average interest rates for 2011 and 2010 were 4.0% and 3.9%, respectively.

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