Goodwill and Intangible Assets (Composition of other intangible assets) (Details) - USD ($) $ in Thousands	Mar. 26, 2016	Mar. 28, 2015
Composition of other intangible assets
Gross carrying amount	$ 66,770	$ 56,932
Accumulated Amortization	27,250	22,377
Customer Lists [Member]
Composition of other intangible assets
Gross carrying amount	22,490	23,648
Accumulated Amortization	13,283	11,024
Favorable Leases [Member]
Composition of other intangible assets
Gross carrying amount	18,418	15,074
Accumulated Amortization	5,996	4,925
Trade Names [Member]
Composition of other intangible assets
Gross carrying amount	18,002	17,550
Accumulated Amortization	6,960	5,791
Franchise Agreements [Member]
Composition of other intangible assets
Gross carrying amount	7,320	120
Accumulated Amortization	487	120
Other Intangible Assets [Member]
Composition of other intangible assets
Gross carrying amount	540	540
Accumulated Amortization	$ 524	$ 517