Other Income (Schedule of Interest Income and Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Nonoperating Income (Expense) [Abstract]
Interest income	$ 38,227	$ 34,211	$ 18,933
Interest expense	(14,469)	(7,987)	(8,012)
Gain on sale of equity investment	15,509	0	0
Unrealized gain on equity investment	14,112	0	0
Other	464	(158)	(4,263)
Other income, net	$ 53,843	$ 26,066	$ 6,658