CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Common Class A Common Stock [Member]	Common Class B Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total
Stockholders' Equity Attributable to Parent, Beginning Balance at Dec. 25, 2011	$ 609	$ 248	$ 2,219,161	$ (1,696,032)	$ (347,654)	$ (1,145)	$ 175,187
Changes in accumulated other comprehensive loss
Net Income (Loss) Attributable to Parent				(144)			(144)
Other Comprehensive Income (Loss), Net of Tax					(133,662)		(133,662)
Stock Issued During Period, Value, New Issues	9		38				47
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			3,523				3,523
Treasury Stock, Value, Acquired, Par Value Method						(1,171)	(1,171)
Treasury Stock, Retired, Par Value Method, Amount	(7)		(2,280)			2,287
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net			(1,279)				(1,279)
Stockholders' Equity Attributable to Parent, Ending Balance at Dec. 30, 2012	611	248	2,219,163	(1,696,176)	(481,316)	(29)	42,501
Changes in accumulated other comprehensive loss
Net Income (Loss) Attributable to Parent				18,803			18,803
Other Comprehensive Income (Loss), Net of Tax					176,415		176,415
Stock Issued During Period, Value, New Issues	10		927				937
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			3,523				3,523
Treasury Stock, Value, Acquired, Par Value Method						(1,793)	(1,793)
Treasury Stock, Retired, Par Value Method, Amount	(6)		(1,779)			1,785
Stockholders' Equity Attributable to Parent, Ending Balance at Dec. 29, 2013	615	248	2,221,834	(1,677,373)	(304,901)	(37)	240,386
Changes in accumulated other comprehensive loss
Net Income (Loss) Attributable to Parent				373,989			373,989
Other Comprehensive Income (Loss), Net of Tax					(111,702)		(111,702)
Stock Issued During Period, Value, New Issues	24		4,784				4,808
Stock Issued During Period, Value, Conversion of Convertible Securities	2	(2)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			3,507				3,507
Treasury Stock, Value, Acquired, Par Value Method						(7,603)	(7,603)
Treasury Stock, Retired, Par Value Method, Amount	(15)		(7,450)			7,465
Stockholders' Equity Attributable to Parent, Ending Balance at Dec. 28, 2014	$ 626	$ 246	$ 2,222,675	$ (1,303,384)	$ (416,603)	$ (175)	$ 503,385