Stockholders' Equity (Details) - Stock Options Outstanding - $ / shares	12 Months Ended
	Dec. 25, 2016	Dec. 27, 2015
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares - Options outstanding (in Shares)	145,624	131,248
Options outstanding - Average remaining contractual life (years)	4 years 1 month	4 years
Options outstanding - Weighted average exercise price (in dollars per share)	$ 129.89	$ 113.12
Options exercisable - Shares	95,878
Options exercisable - Weighted average exercise price (in dollars per share)	$ 114.54
Range: $53.75 - 53.75
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower Range	53.75
Upper Range	$ 53.75
Shares - Options outstanding (in Shares)	13,466
Options outstanding - Average remaining contractual life (years)	1 year
Options outstanding - Weighted average exercise price (in dollars per share)	$ 53.75
Options exercisable - Shares	13,466
Options exercisable - Weighted average exercise price (in dollars per share)	$ 53.75
Range: $87.53 - 94.42
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower Range	87.53
Upper Range	$ 94.42
Shares - Options outstanding (in Shares)	42,159
Options outstanding - Average remaining contractual life (years)	2 years 7 months
Options outstanding - Weighted average exercise price (in dollars per share)	$ 90.06
Options exercisable - Shares	42,159
Options exercisable - Weighted average exercise price (in dollars per share)	$ 90.06
Range: $147.52 - 147.55
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower Range	147.52
Upper Range	$ 147.55
Shares - Options outstanding (in Shares)	55,031
Options outstanding - Average remaining contractual life (years)	5 years 2 months
Options outstanding - Weighted average exercise price (in dollars per share)	$ 147.54
Options exercisable - Shares	24,437
Options exercisable - Weighted average exercise price (in dollars per share)	$ 147.53
Range: $169.15 - 182.97
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower Range	169.15
Upper Range	$ 182.97
Shares - Options outstanding (in Shares)	34,968
Options outstanding - Average remaining contractual life (years)	5 years 3 months
Options outstanding - Weighted average exercise price (in dollars per share)	$ 179.46
Options exercisable - Shares	15,816
Options exercisable - Weighted average exercise price (in dollars per share)	$ 180.59