Insurance Claims (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Business Interruption Loss [Line Items]
Pre-tax gain on insurance settlement	$ 0	$ 106,332,000	$ 0	$ 106,332,000
Wynne Arkansas Manufacturing Operation [Member]
Business Interruption Loss [Line Items]
Proceeds from settlement of insurance claim		127,300,000
Deductible for insurance claim		500,000
Pre-tax gain on insurance settlement		$ 106,300,000
Gain per diluted share, after tax (in dollars per share)		$ 1.17