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Share-based Compensation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 25, 2018
Dec. 26, 2017
Dec. 27, 2016
Share-based Compensation      
Share-based compensation expense $ 33,983 $ 26,934 $ 26,067
Labor expense      
Share-based Compensation      
Share-based compensation expense 8,463 7,171 6,124
General and administrative expense      
Share-based Compensation      
Share-based compensation expense $ 25,520 $ 19,763 $ 19,943