Acquisitions (Schedule Of Purchase Price Allocation) (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Mar. 27, 2021
Purchase price of acquisitions allocation
Goodwill	$ 779,091		$ 689,524
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		31
Long-term deferred income tax assets		1,336
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	1,208
Other current assets	424
Property and equipment	1,455
Finance lease and financing obligation assets	15,568
Operating lease assets	35,815
Intangible assets	3,120
Other non-current assets	79
Long-term deferred income tax assets	4,332
Total assets acquired	62,001
Current portion of finance leases and financing obligations	1,569
Current portion of operating lease liabilities	3,324
Deferred revenue	1,273
Other current liabilities	273
Long-term finance leases and financing obligations	21,584
Long-term operating lease liabilities	39,401
Other long-term liabilities	1,055
Total liabilities assumed	68,479
Total net identifiable liabilities assumed	(6,478)
Total consideration transferred	83,175
Less: total net identifiable liabilities assumed	(6,478)
Goodwill	$ 89,653