Acquisitions (Schedule Of Purchase Price Allocation) (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Mar. 26, 2016
Purchase price of acquisitions allocation
Goodwill	$ 487,923		$ 400,132
Fiscal 2017 Acquisitions [Member]
Purchase price of acquisitions allocation
Trade receivables	7,052
Inventories	19,009
Other current assets	377
Property, plant and equipment	20,094
Intangible assets	15,845
Other non-current assets	208
Long-term deferred income tax assets	5,076
Total assets acquired	67,661
Warranty reserves	393
Other current liabilities	1,991
Long-term capital leases and financing obligations	21,418
Other long-term liabilities	654
Total liabilities assumed	24,456
Total net identifiable assets acquired	43,205
Total consideration transferred	129,103
Less: total net identifiable assets acquired	43,205
Goodwill	$ 85,898
Fiscal 2016 Acquisitions [Member]
Purchase price of acquisitions allocation
Trade receivables		$ 377
Inventories		820
Other current assets		486
Property, plant and equipment		12,244
Intangible assets		11,227
Other non-current assets		25
Long-term deferred income tax assets		6,647
Total assets acquired		31,826
Warranty reserves		162
Other current liabilities		2,074
Long-term capital leases and financing obligations		26,137
Other long-term liabilities		870
Total liabilities assumed		29,243
Total net identifiable assets acquired		2,583
Total consideration transferred		49,560
Less: total net identifiable assets acquired		2,583
Goodwill		$ 46,977