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Stock Based Compensation (Schedule of Share Based Compensation Included in Net Income) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Jan. 01, 2021
Dec. 27, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total share based compensation $ 10,122 $ 9,740 $ 7,716
Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total share based compensation 9,716 8,676 6,762
Common Stock Subject to Vesting Requirements [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total share based compensation $ 406 $ 1,064 $ 954