Summary of Significant Accounting Policies Other assets (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Security Owned Not Readily Marketable [Line Items]
Gain (Loss) on Sale of Equity Investments	$ 8,439	$ 0	$ 0
Equity Securities without Readily Determinable Fair Value, Amount	$ 21,000	$ 15,100

The difference between the carrying value and the sale price of equity securities, not separately or otherwise categorized as trading or available-for-sale. This element includes investments in which the entity holds a small ownership stake (generally, less than 20% of the shares outstanding) and cannot exert significant influence.

No definition available.

Name:	us-gaap_GainLossOnSaleOfEquityInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration