Acquisitions (Schedule Of Purchase Price Allocation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 26, 2022	Mar. 27, 2021	Mar. 30, 2019
Purchase price of acquisitions allocation
Goodwill	$ 776,714	$ 689,524	$ 671,843
Fiscal 2021 Acquisitions [Member]
Purchase price of acquisitions allocation
Inventory		1,017
Other current assets		172
Property and equipment		796
Finance lease and financing obligation assets		5,089
Operating lease assets		8,980
Intangible assets		418
Other non-current assets		1,336
Long-term deferred income tax assets		31
Total assets acquired		17,839
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		548
Total liabilities assumed		18,317
Total net identifiable liabilities assumed		(478)
Total consideration transferred		17,112
Less: total net identifiable liabilities assumed		(478)
Goodwill		$ 17,590
Fiscal 2022 Acquisitions [Member]
Purchase price of acquisitions allocation
Inventory	1,298
Other current assets	424
Property and equipment	3,536
Finance lease and financing obligation assets	19,228
Operating lease assets	30,461
Intangible assets	4,820
Other non-current assets	79
Long-term deferred income tax assets	4,818
Total assets acquired	64,664
Current portion of finance leases and financing obligations	1,832
Current portion of operating lease liabilities	3,058
Deferred revenue	1,261
Other current liabilities	273
Long-term finance leases and financing obligations	26,061
Long-term operating lease liabilities	35,304
Other long-term liabilities	1,043
Total liabilities assumed	68,832
Total net identifiable liabilities assumed	(4,168)
Total consideration transferred	83,109
Less: total net identifiable liabilities assumed	(4,168)
Goodwill	$ 87,277