Equity Compensation - Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Dec. 25, 2016
Number of Options
Number of Options, Outstanding (in shares)	1,452,000
Number of Options, Granted (in shares)	456,000	315,000	403,000
Number of Options, Exercised (in shares)	(75,000)	(147,000)	(478,000)
Number of Options, Cancelled (in shares)	(219,000)
Number of Options, Outstanding (in shares)	1,614,000	1,452,000
Number of Options, Exercisable (in shares)	976,000
Weighted Average Exercise Price
Weighted Average Exercise Price, Outstanding (in dollars per share)	$ 53.43
Weighted Average Exercise Price, Granted (in dollars per share)	59.23
Weighted Average Exercise Price, Exercised (in dollars per share)	36.06
Weighted Average Exercise Price, Cancelled (in dollars per share)	65.33
Weighted Average Exercise Price, Outstanding (in dollars per share)	54.27	$ 53.43
Weighted Average Exercise Price, Exercisable (in dollars per share)	$ 47.66
Options, Additional Disclosures
Weighted Average Remaining Contractual Term, Outstanding	6 years 9 months 15 days
Weighted Average Remaining Contractual Term, Exercisable	5 years 6 months 18 days
Aggregate Intrinsic Value, Outstanding	$ 5,985
Aggregate Intrinsic Value, Exercisable	$ 5,985