Condensed Consolidated Statements of Stockholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
Stockholders' Equity Balance at Dec. 26, 2010	$ 1,078,596,000	$ 2,143,000	$ 1,442,810,000	$ (348,653,000)	$ (23,637,000)	$ 5,933,000
Balance, Common Shares at Dec. 26, 2010		214,282,000
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(119,895,000)	0	0	(120,760,000)	0	865,000
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	(477,000)	0	0	0	(477,000)	0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(38,000)	0	0	0	(38,000)	0
Other Comprehensive Income (Loss), Net of Tax	(515,000)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(120,410,000)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	120,000	0	120,000	0	0	0
Stockholders' Equity Balance at Mar. 27, 2011	958,306,000	2,143,000	1,442,930,000	(469,413,000)	(24,152,000)	6,798,000
Balance, Common Shares at Mar. 27, 2011		214,282,000
Stockholders' Equity Balance at Dec. 25, 2011	558,430,000	2,143,000	1,443,484,000	(843,945,000)	(46,070,000)	2,818,000
Balance, Common Shares at Dec. 25, 2011		214,282,000
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	39,598,000			39,173,000		425,000
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	5,000				5,000
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	415,000				415,000
Other Comprehensive Income (Loss), Net of Tax	420,000
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	40,018,000
Stock Issued During Period, Shares, New Issues		44,444,000
Stock Issued During Period, Value, New Issues	198,379,000	444,000	197,935,000
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		200,000
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	149,000	2,000	147,000
Stockholders' Equity Balance at Mar. 25, 2012	$ 796,976,000	$ 2,589,000	$ 1,641,566,000	$ (804,772,000)	$ (45,650,000)	$ 3,243,000
Balance, Common Shares at Mar. 25, 2012		258,926,000