Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016	Dec. 31, 2016
Income Tax Contingency [Line Items]
Income tax expense (benefit)	$ (4,673)	$ 3,695	$ (34,344)	$ 13,564
Effective income tax rate	7.40%	36.80%	22.50%	43.80%
Valuation allowance recorded against deferred tax assets	$ 10,500		$ 10,500
Deferred tax assets, net	162,899		162,899		$ 174,097
Unrecognized tax benefits	37,300		37,300
Unrecognized tax benefits that would impact effective tax rate	32,300		32,300
Additional Paid-in Capital [Member] | Accounting Standards Update 2016-09 [Member]
Income Tax Contingency [Line Items]
New accounting pronouncement effect of adoption	$ 1,200		$ 4,000