Other - Interest Expense and Other, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Other Income and Expenses [Abstract]
Interest income and other expense, net	$ 2,053	$ 2,965	$ 3,743	$ 17,004
Interest expense	(180)	(179)	(359)	(364)
Total interest income and other, net	$ 1,873	$ 2,786	$ 3,384	16,640
Gain related to non-marketable equity investment				$ 10,100