Stockholders' Equity (Details) - Stock Options Activity - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 25, 2016	Dec. 27, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
December 27, 2015	131,248
Granted	42,889
Exercised	(22,033)
Forfeited	(5,280)
Expired	(1,200)
December 25, 2016	145,624	131,248
December 25, 2016	95,878
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding, December 27, 2015 (in Dollars per share)	$ 113.12
Granted (in Dollars per share)	152.03
Exercised (in Dollars per share)	65.79
Forfeited (in Dollars per share)	152.01
Expired (in dollars per share)	167.17
Outstanding, December 25, 2016 (in Dollars per share)	129.89	$ 113.12
Exercisable, December 25, 2016 (in Dollars per share)	$ 114.54
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Average remaining contractual life (years) - Options outstanding	4 years 1 month	4 years
Average remaining contractual life exercisable, December 28, 2014 (in years)	3 years 5 months
Aggregate intrinsic value outstanding, December 29, 2013 (in Dollars)	$ 5,076	$ 7,051
Aggregate intrinsic value exercisable, December 28, 2014 (in Dollars)	$ 4,692