Acquisitions (Schedule Of Purchase Price Allocation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 31, 2018
Purchase price of acquisitions allocation
Total consideration transferred	$ 103,600	$ 61,700
Goodwill	671,843	565,503	$ 522,892
Fiscal 2019 Acquisitions [Member]
Purchase price of acquisitions allocation
Trade receivables		1,674
Inventories		8,968
Other current assets		316
Property, plant and equipment		8,583
Finance lease and financing obligation assets, net		7,546
Intangible assets		9,615
Other non-current assets		21
Long-term deferred income tax assets		2,719
Total assets acquired		39,442
Current portion of long-term debt, finance leases and financing obligations		1,651
Deferred revenue		445
Other current liabilities		540
Long-term finance leases and financing obligations		16,048
Other long-term liabilities		637
Total liabilities assumed		19,321
Total net identifiable assets acquired (liabilities assumed)		20,121
Total consideration transferred		61,654
Less: total net identifiable assets acquired (liabilities assumed)		20,121
Goodwill		$ 41,533
Fiscal 2020 Acquisitions [Member]
Purchase price of acquisitions allocation
Inventories	4,469
Other current assets	706
Property, plant and equipment	2,367
Finance lease and financing obligation assets, net	29,147
Operating lease assets, net	42,680
Intangible assets	2,847
Other non-current assets	305
Long-term deferred income tax assets	4,875
Total assets acquired	87,396
Current portion of long-term debt, 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 assets acquired (liabilities assumed)	(3,308)
Total consideration transferred	103,622
Less: total net identifiable assets acquired (liabilities assumed)	(3,308)
Goodwill	$ 106,930