Stock-Based Compensation - RSAs and RSUs, PSUs and MSUs activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
RSAs and RSUs
Number of equity awards
Outstanding at the beginning the of year (in shares)	1,523
Granted (in shares)	522
Vested, earned or issued (in shares)	(730)
Cancelled or forfeited (in shares)	(97)
Outstanding at the end of the year (in shares)	1,218	1,523
Outstanding at the end of the year and expected to vest (in shares)	1,147
Weighted-Average Purchase Price
Granted (in dollars per share)	$ 93.75	$ 72.85	$ 40.55
Weighted-Average Remaining Vesting Term
Outstanding at the end of year	10 months 10 days
Outstanding at the end of year and expected to vest	10 months 10 days
Aggregate Intrinsic Value
Outstanding at the end of the year (in dollars)	$ 95,620
Outstanding at the end of the year and expected to vest (in dollars)	$ 90,008
PSUs and MSUs
Number of equity awards
Outstanding at the beginning the of year (in shares)	259
Granted (in shares)	81
Vested, earned or issued (in shares)	(37)
Cancelled or forfeited (in shares)	(21)
Outstanding at the end of the year (in shares)	282	259
Outstanding at the end of the year and expected to vest (in shares)	249
Weighted-Average Purchase Price
Granted (in dollars per share)	$ 97.53	$ 78.40	$ 32.23
Weighted-Average Remaining Vesting Term
Outstanding at the end of year	1 year 1 month 6 days
Outstanding at the end of year and expected to vest	1 year 1 month 6 days
Aggregate Intrinsic Value
Outstanding at the end of the year (in dollars)	$ 22,164
Outstanding at the end of the year and expected to vest (in dollars)	$ 19,615