Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012		Dec. 31, 2011		Jan. 01, 2011
Net earnings (loss)	$ (93,872)		$ 35,805		$ 50,941
Change in fair value of derivatives, net of tax			264	[1]	426	[2]
Comprehensive income (loss)	(94,870)		32,082		50,713
Pension Plans, Defined Benefit [Member]
Minimum liability adjustment, net of tax	(1,066)	[3]	(4,006)	[4]	(679)	[5]
Other Postretirement Benefit Plans, Defined Benefit [Member]
Minimum liability adjustment, net of tax	$ 68	[6]	$ 19	[7]	$ 25	[8]

[1] Net of tax of $169.

[2] Net of tax of $272

[3] Net of tax of ($682).

[4] Net of tax of ($2,561).

[5] Net of tax of ($434).

[6] Net of tax of $44.

[7] Net of tax of $12.

[8] Net of tax of $16.