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Cash and Receivables Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 29, 2019	Sep. 29, 2019	Dec. 30, 2018
Cash and Cash Equivalents
Cash	$ 238,125	$ 185,203
Cash equivalents	75,062	114,992
Cash and cash equivalents	313,187	300,195
Restricted cash and cash equivalents, current	38,460	34,539
Total restricted cash and cash equivalents, current	93,237	58,512
Total cash, cash equivalents and restricted cash	406,424	358,707	$ 497,709	$ 486,512
Restricted cash
Cash and Cash Equivalents
Restricted cash and cash equivalents, current	38,460	34,539
Restricted cash \| Accounts held by trustee for the securitized financing facility
Cash and Cash Equivalents
Restricted cash and cash equivalents, current	38,127	34,209
Restricted cash \| Other
Cash and Cash Equivalents
Restricted cash and cash equivalents, current	333	330
Advertising funds restricted assets
Cash and Cash Equivalents
Restricted cash and cash equivalents, current	$ 54,777	$ 23,973