Acquisitions (Schedule Of Intangible Assets Acquired) (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 24, 2016	Sep. 26, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 15,845	$ 11,227
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	10 years
Franchise Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets		7,100
Customer Lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 9,325	599
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	9 years
Favorable Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 5,197	1,528
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	13 years
Trade Name [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 1,323	$ 2,000
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	11 years
Fiscal 2016 Acquisitions [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	13 years
Fiscal 2016 Acquisitions [Member] | Franchise Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	13 years
Fiscal 2016 Acquisitions [Member] | Customer Lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	7 years
Fiscal 2016 Acquisitions [Member] | Favorable Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	14 years
Fiscal 2016 Acquisitions [Member] | Trade Name [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	15 years