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Income Taxes (Components of income Tax (Benefit) Expense) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 29, 2017
Dec. 30, 2016
Jan. 01, 2016
Current tax expense      
Federal $ 3,231 $ 8,969 $ 2,042
State 445 1,065 463
Foreign 989 252 224
Current Income Tax Expense (Benefit), Total 4,665 10,286 2,729
Deferred tax expense (benefit)      
Federal (2,915) 789 3,566
State 209 667 529
Foreign 925 883 883
Deferred Income Tax Expense (Benefit) (1,781) 2,339 4,978
Income tax expense $ 2,884 $ 12,625 $ 7,707