Income Taxes (Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 25, 2012
Assets:
General business credit carryforwards	$ 9,118	$ 13,450
Insurance reserves	9,093	9,078
Profit sharing and vacation	8,072	6,833
Unfavorable leasehold interests	4,241	4,933
Deferred rent	2,524	2,053
Other	3,653	6,074
Total deferred tax assets	36,701	42,421
Liabilities:
Depreciation and amortization	(230,322)	(232,661)
Debt refinancing	(3,556)	(4,294)
Favorable leasehold interests	(3,434)	(3,564)
Other	(2,949)	(2,747)
Total deferred tax liabilities	(240,261)	(243,266)
Net deferred tax liability	(203,560)	(200,845)
Current asset	10,895	17,445
Non-current liability	$ (214,455)	$ (218,290)