Accumulated Other Comprehensive Income (Loss) (Reclassifications out of AOCI) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Loss from continuing operations before income taxes	$ (10,951)	$ 3,987	$ (68,309)	$ (31,155)
Income tax (benefit) expense	157	9,440	1,427	5,096
(Loss) income from continuing operations	(10,794)	13,427	(66,882)	(26,059)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Loss from continuing operations before income taxes	794	0	2,381	0
Income tax (benefit) expense	(314)	0	(941)	0
(Loss) income from continuing operations	480	0	1,440	0
Pension and Other Postretirement Benefits [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net actuarial losses	$ 794	$ 0	$ 2,381	$ 0