Accumulated Other Comprehensive Income (Loss) (Reclassifications out of AOCI) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax									$ (71,774)	$ (24,808)	$ (4,149)
Income tax expense									13,753	55,720	4,545
Loss from continuing operations	(59,468)	13,427	(18,996)	(20,490)	(57,389)	3,022	(1,790)	(24,371)	(85,527)	(80,528)	(8,694)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax									7,773	6,418
Income tax expense									(3,031)	(2,503)
Loss from continuing operations									4,742	3,915
Pension and Other Postretirement Benefits [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net actuarial losses									7,779	6,424
Prior service cost									$ (6)	$ (6)