Employee Benefit Plans (Summary Of The Status Of The Company's Nonvested Shares) (Details) (Restricted Stock [Member], USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Restricted Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Nonvested at beginning of year, Shares	496,059	1,318,162	2,663,216
Nonvested at beginning of year, Weighted Average Grant-Date Price	$ 10.39	$ 13.21	$ 14.06
Granted, Shares	2,890,943	173,387	21,628
Granted, Weighted Average Grant-Date Price	$ 3.96	$ 8.01	$ 0.85
Vested, Shares	(594,876)	(741,007)	(1,230,397)
Vested, Weighted Average Grant-Date Price	$ 9.00	$ 14.19	$ 14.60
Forfeited, Shares	(179,250)	(254,483)	(136,285)
Forfeited, Weighted Average Grant-Date Price	$ 4.97	$ 11.31	$ 15.24
Nonvested at end of year, Shares	2,612,876	496,059	1,318,162
Nonvested at end of year, Weighted Average Grant-Date Price	$ 3.96	$ 10.39	$ 13.21