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FINANCIAL STATEMENT POLICIES (Schedule Of Cash And Restricted Cash Equivalents) (Details) - USD ($)
$ in Thousands
Jun. 29, 2019
Dec. 29, 2018
Jun. 30, 2018
Dec. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Cash and cash equivalents $ 226,596 $ 403,373 $ 241,797  
Restricted cash included in prepaid expenses and other current assets 30   32  
Restricted cash included in intangible and other assets-net 7,861   1,787  
Cash, cash equivalents and restricted cash $ 234,487 $ 410,883 $ 243,616 $ 231,655