Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended				6 Months Ended	9 Months Ended
	Dec. 24, 2016	Sep. 24, 2016	Jun. 25, 2016	Dec. 26, 2015	Sep. 24, 2016	Dec. 24, 2016	Dec. 26, 2015
Income Taxes [Abstract]
Provision for income taxes	$ 23,751,000	$ 16,634,000	$ 3,598,000	$ 21,011,000	$ 20,232,000	$ 43,983,000	$ 45,258,000
Effective Income Tax Rate, Continuing Operations	16.30%			33.70%		16.30%	29.20%
Share-based compensation, excess tax benefits, amount	$ 10,800,000	8,000,000	$ 2,200,000
Unrecognized Tax Benefits	29,000,000					$ 29,000,000
Accrued interest and penalties	200,000					200,000
Interest and penalties incurred during period						200,000	$ 0
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 2,300,000					$ 2,300,000