Acquisitions (Schedule Of Purchase Price Allocation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2021	Mar. 28, 2020	Mar. 30, 2019
Purchase price of acquisitions allocation
Total consideration transferred		$ 103,700
Goodwill	$ 689,524	671,843	$ 565,503
Fiscal 2020 Acquisitions [Member]
Purchase price of acquisitions allocation
Inventories		4,433
Other current assets		706
Property and equipment		2,405
Finance lease and financing obligation assets, net		29,147
Operating lease assets, net		42,680
Intangible assets		2,847
Other non-current assets		374
Long-term deferred income tax assets		4,870
Total assets acquired		87,462
Current portion of finance leases and financing obligations		2,672
Current portion of operating lease liabilities		4,416
Deferred revenue		1,618
Other current liabilities		358
Long-term finance leases and financing obligations		36,225
Long-term operating lease liabilities		43,668
Other long-term liabilities		1,747
Total liabilities assumed		90,704
Total net identifiable liabilities assumed		(3,242)
Total consideration transferred		103,692
Less: total net identifiable liabilities assumed		(3,242)
Goodwill		$ 106,934
Fiscal 2021 Acquisitions [Member]
Purchase price of acquisitions allocation
Inventories	1,046
Other current assets	172
Property and equipment	674
Finance lease and financing obligation assets, net	5,089
Operating lease assets, net	8,980
Intangible assets	418
Other non-current assets	30
Long-term deferred income tax assets	1,331
Total assets acquired	17,740
Current portion of finance leases and financing obligations	748
Current portion of operating lease liabilities	976
Deferred revenue	697
Other current liabilities	4
Long-term finance leases and financing obligations	7,911
Long-term operating lease liabilities	7,433
Other long-term liabilities	536
Total liabilities assumed	18,305
Total net identifiable liabilities assumed	(565)
Total consideration transferred	17,112
Less: total net identifiable liabilities assumed	(565)
Goodwill	$ 17,677