Investments Other Investments in Equity Securities (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 31, 2019	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Proceeds from sale of investment		$ 24,496	$ 450,000	$ 4,111
Gain on sale of investment		$ 24,496	$ 450,000	$ 2,570
Other investments in equity securities
Proceeds from sale of investment	$ 25,000
Other investments in equity securities | Investment Income
Gain on sale of investment	24,366
Other investments in equity securities | General and administrative
Gain on sale of investment	$ 634