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Basis of Presentation and New Accounting Pronouncements - ASU 2016-18 Information (Details) - USD ($)
$ in Thousands
Sep. 26, 2020
Dec. 28, 2019
Sep. 28, 2019
Dec. 29, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Cash and cash equivalents as previously reported in the Condensed Consolidated Statements of Cash Flows $ 185,368 $ 144,545    
Current assets - Restricted cash 1,477 1,981    
Restricted cash 1,398 1,411    
Cash, cash equivalents and restricted cash as currently reported in the Condensed Consolidated Statements of Cash Flows $ 188,243 $ 147,937 $ 124,740 $ 100,546