Equity Compensation - Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 27, 2020	Dec. 29, 2019	Dec. 30, 2018
Number of Options
Number of Options, Outstanding (in shares)	1,205,000
Number of Options, Granted (in shares)	0	353,000	456,000
Number of Options, Exercised (in shares)	(541,000)	(448,000)	(75,000)
Number of Options, Cancelled (in shares)	(100,000)
Number of Options, Outstanding (in shares)	564,000	1,205,000
Number of Options, Exercisable (in shares)	337,000
Weighted Average Exercise Price
Weighted Average Exercise Price, Outstanding (in dollars per share)	$ 55.67
Weighted Average Exercise Price, Exercised (in dollars per share)	56.73
Weighted Average Exercise Price, Cancelled (in dollars per share)	54.70
Weighted Average Exercise Price, Outstanding (in dollars per share)	54.82	$ 55.67
Weighted Average Exercise Price, Exercisable (in dollars per share)	$ 59.31
Options, Additional Disclosures
Weighted Average Remaining Contractual Term, Outstanding	6 years 6 months 29 days
Weighted Average Remaining Contractual Term, Exercisable	5 years 8 months 4 days
Aggregate Intrinsic Value, Outstanding	$ 18,453
Aggregate Intrinsic Value, Exercisable	$ 9,512