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Stock Based Compensation (Schedule of Share Based Compensation Included in Net Income) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 30, 2016
Jan. 01, 2016
Jan. 02, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total share based compensation $ 8,765 $ 10,361 $ 6,370
Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total share based compensation 7,550 6,776 4,994
Stock Options And Stock Appreciation Rights [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total share based compensation   2,658 477
Common Stock Subject to Vesting Requirements [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total share based compensation $ 1,215 $ 927 $ 899