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Income Taxes (Schedule of Reconciliation of Income Taxes at the Statutory Federal Income Tax Rate to Net Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2020	Dec. 28, 2018	Dec. 29, 2017
Income Tax Disclosure [Abstract]
Federal income tax rate	21.00%	21.00%	34.00%
U.S. federal income tax provision at statutory rate	$ 83,603	$ 94,939	$ 53,916
State tax expense	1,148	4,690	8,282
Change in valuation allowance	3,208	(315,394)	(34,266)
Research credits	(8,299)	(18,308)	0
Stock-based compensation	(9,177)	(5,998)	(20,548)
Non-deductible executive compensation	4,228	1,111	1,239
Non-deductible interest	0	0	1,367
Other	2,386	982	(5,640)
Income tax provision (benefit)	$ 77,097	$ (237,978)	$ 4,350

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Effective Income Tax Rate Reconciliation, Nondeductible Expense, Deferred Compensation

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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