Property, Plant and Equipment (Major Classifications Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Mar. 26, 2016	Mar. 28, 2015
Major classifications of property, plant and equipment
Property, plant and equipment	$ 639,936	$ 592,206
Less - Accumulated depreciation and amortization	288,354	265,454
Net property, plant and equipment	351,582	326,752
Land [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	80,195	77,499
Buildings and Improvements [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	325,390	293,671
Equipment, Signage and Fixtures [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	208,204	196,039
Vehicles [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	23,608	21,803
Construction-in-Progress [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	2,539	3,194
Assets Owned [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	526,967	503,058
Less - Accumulated depreciation and amortization	258,516	239,474
Net property, plant and equipment	268,451	263,584
Assets Owned [Member] | Land [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	80,195	77,499
Assets Owned [Member] | Buildings and Improvements [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	212,421	204,523
Assets Owned [Member] | Equipment, Signage and Fixtures [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	208,204	196,039
Assets Owned [Member] | Vehicles [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	23,608	21,803
Assets Owned [Member] | Construction-in-Progress [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	2,539	3,194
Assets Under Capital Lease [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	112,969	89,148
Less - Accumulated depreciation and amortization	29,838	25,980
Net property, plant and equipment	83,131	63,168
Assets Under Capital Lease [Member] | Buildings and Improvements [Member]
Major classifications of property, plant and equipment
Property, plant and equipment	$ 112,969	$ 89,148