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Recent Accounting Pronouncements (Details) - USD ($)
$ in Thousands
6 Months Ended
Dec. 26, 2018
Jun. 25, 2019
Accounting pronouncements    
Lease liability   $ 538,292
Cumulative effect on retained earnings $ 2,700  
ASU 2016-02 (Topic 842)    
Accounting pronouncements    
Cumulative effect on retained earnings   $ (2,678)