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Shareholders' Equity - Summary of Stock Option Activity (Details) - Employee Stock Option - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Stock Options    
Balance at December 30, 2017 1,355  
Granted 170  
Exercised (186)  
Canceled/Forfeited (17)  
Outstanding at December 29, 2018 1,322 1,355
Exercisable at December 29, 2018 898  
Vested and expected to vest at December 29, 2018 1,295  
Weighted- Average Exercise Price per Share    
Balance at December 30, 2017 $ 20.23  
Granted 33.72  
Exercised 14.96  
Canceled/Forfeited 26.43  
Outstanding at December 29, 2018 22.64 $ 20.23
Exercisable at December 29, 2018 20.76  
Vested and expected to vest at December 29, 2018 $ 22.55  
Weighted- Average Remaining Contractual Term    
Weighted-Average Remaining Contractual Term (years) - Outstanding 5 years 10 months 24 days 6 years 2 months 12 days
Weighted-Average Remaining Contractual Term (years) - Exercisable 4 years 9 months 18 days  
Weighted-Average Remaining Contractual Term (years) - Vested and expected to vest 5 years 10 months 24 days  
Aggregate Intrinsic Value    
Aggregate Intrinsic Value - Outstanding [1] $ 13,009 $ 23,515
Aggregate Intrinsic Value - Exercisable [1] 10,332  
Aggregate Intrinsic Value - Vested and expected to vest [1] $ 12,841  
[1] Aggregate intrinsic value includes only those options where the current share price is equal to or greater than the share price on the date of grant