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Income Taxes - Components of Provision for Taxes (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Current Provision:      
Federal $ 7,835 $ 535 $ 4,693
Foreign 17,372 11,323 10,623
State 285 838 1,152
Current provision 25,492 12,696 16,468
Deferred Provision (Benefit):      
Federal 4,682 1,738 45
Foreign (3,563) (1,818) (1,378)
State (541) (533) (373)
Deferred (benefit) provision 578 (613) (1,706)
Continuing Operations $ 26,070 $ 12,083 $ 14,762