Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 05, 2020	Jun. 30, 2019	Jul. 05, 2020	Jun. 30, 2019
Income Tax Contingency [Line Items]
Share-based Payment Arrangement, Expense	$ 9,603	$ 6,703	$ 12,653	$ 12,801
Provision for income taxes	27,614	2,686	28,588	3,998
Unrecognized tax benefits, gross	35,200		35,200
Uncertain tax benefits if recognized that could affect the continuing operations effective tax rate	33,500		33,500
Uncertain tax positions including accrued interest, net of tax benefits and penalties, to be resolved within the next year	4,200		$ 4,200
Open Tax Years by Major Tax Jurisdiction, Begin Date			2010
Tax Adjustments, Settlements, and Unusual Provisions			$ (5,500)	(9,200)
Discontinued Operation, Tax Effect of Discontinued Operation	51	54	101	95
Income Tax Expense (Benefit), Intraperiod Tax Allocation	$ 27,665	$ 2,740	28,689	4,093
Excess Income Tax Benefit on Stock Compensation			(2,800)	$ (4,400)
Valuation allowance adjustments [Member]
Income Tax Contingency [Line Items]
Tax Adjustments, Settlements, and Unusual Provisions			$ (3,800)