Goodwill and Intangible Assets (Composition of other intangible assets) (Details) - USD ($) $ in Thousands	Mar. 25, 2017	Mar. 26, 2016
Composition of other intangible assets
Gross carrying amount	$ 88,479	$ 66,770
Accumulated Amortization	34,191	27,250
Customer Lists [Member]
Composition of other intangible assets
Gross carrying amount	34,489	22,490
Accumulated Amortization	16,372	13,283
Favorable Leases [Member]
Composition of other intangible assets
Gross carrying amount	25,378	18,418
Accumulated Amortization	7,764	5,996
Trade Names [Member]
Composition of other intangible assets
Gross carrying amount	20,852	18,002
Accumulated Amortization	8,358	6,960
Franchise Agreements [Member]
Composition of other intangible assets
Gross carrying amount	7,220	7,320
Accumulated Amortization	1,167	487
Other Intangible Assets [Member]
Composition of other intangible assets
Gross carrying amount	540	540
Accumulated Amortization	$ 530	$ 524