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Income Taxes (Details Textual) (USD $)	12 Months Ended
Income Taxes (Details Textual) (USD $)	Dec. 31, 2013	Dec. 25, 2012	Dec. 27, 2011	Dec. 28, 2010
Income Tax Disclosure [Abstract]
Employment-related tax credits from continuing operations	$ 6,000,000	$ 5,000,000	$ 7,700,000
Liability for uncertain tax positions	3,977,000	4,607,000	9,527,000	9,049,000
Liabilities for interest and penalties	1,100,000
Deferred tax asset related to total state tax exposures	600,000
Net impact of unrecognized tax benefit	1,000,000
US general business credit carryforwards	$ 9,118,000	$ 13,450,000

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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