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Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 30, 2018
Dec. 29, 2018
Sep. 26, 2020
Dec. 28, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Operating lease assets     $ 53,124 $ 54,408
Accounting standards update us-gaap:AccountingStandardsUpdate201602Member us-gaap:AccountingStandardsUpdate201602Member    
Operating lease liability     $ 52,809 $ 54,408
ASU 2016-02        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Operating lease assets $ 57,500      
Operating lease liability 57,500      
Cumulative Effect, Period of Adoption, Adjustment | ASU 2016-02        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Gain associated with sale-leaseback transactions $ 1,700