Income Taxes (Reconciliation of Income Taxes) (Details)	12 Months Ended
	Dec. 25, 2013	Dec. 26, 2012	Dec. 28, 2011
Reconciliation of income taxes at the U.S. federal statutory tax rate to effective tax rate:
Statutory provision rate	35.00%	35.00%	35.00%
State, foreign, and other taxes, net of federal income tax benefit	6.00%	5.00%	6.00%
Wage addback (deductions) on income tax credits earned (expired), net	3.00%	2.00%	(4.00%)
General business credits generated	(10.00%)	(7.00%)	(14.00%)
Other	(1.00%)	3.00%	(4.00%)
Effective tax rate before release of valuation allowance	33.00%	38.00%	19.00%
Release of valuation allowance	(1.00%)	(2.00%)	(315.00%)
Effective tax rate	32.00%	36.00%	(296.00%)