Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 28, 2014	Sep. 30, 2015	Sep. 28, 2014
Income Tax Disclosure [Abstract]
Income tax expense	$ 11,314	$ 2,647	$ 32,923	$ 62,601
Effective tax rate on pretax income, percent	28.90%	4.80%	35.10%	29.70%
U.S federal statutory rate, percent			35.00%	35.00%
Resolution of certain federal income tax matters, tax expense (benefit)	$ 4,000	$ 4,000	$ 4,000	$ 4,000
One-time tax benefit resulting from spin-off		11,000		11,000
Other tax expense (benefit) adjustments		$ 1,000		$ 1,000