Supplemental Stockholders' Equity Information - Reclassifications out of Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014		Mar. 31, 2013
Reclassification out of accumulated other comprehensive income (loss):
Income from continuing operations	$ 2,847		$ 6,108
Income tax expense	3,764		5,082
Funded Status of Benefit Plans [Member] | Reclassification out of accumulated other comprehensive income (loss) [Member]
Reclassification out of accumulated other comprehensive income (loss):
Amortization of prior service credit	(2,086)	[1]
Amortization of actuarial loss	8,836	[1]
Income from continuing operations	6,750	[2]
Income tax expense	2,701
Total reclassification, net of tax	$ 4,049

[1] These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost for pension and other postretirement benefits. See Note 9 for additional information.

[2] There were no reclassifications relating to noncontrolling interest for the quarter ended March 30, 2014.