Acquisitions (Purchase Price Allocations) (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Mar. 28, 2015
Purchase price of acquisitions allocation
Goodwill	$ 399,231		$ 349,088
Fiscal 2016 Aquisitions [Member]
Purchase price of acquisitions allocation
Trade receivables	251
Inventories	831
Other current assets	133
Property, plant and equipment	9,876
Intangible assets	11,538
Long-term deferred income tax assets	5,583
Other non-current assets	25
Total assets acquired	28,237
Warranty reserves	161
Other current liabilities	1,706
Long-term capital leases and financing obligations	22,143
Other long-term liabilities	116
Total liabilities assumed	24,126
Total net identifiable assets (liabilities) acquired	4,111
Total consideration transferred	49,425
Less: total net identifiable assets (liabilities) acquired	4,111
Goodwill	$ 45,314
Fiscal 2015 Acquisitions [Member]
Purchase price of acquisitions allocation
Inventories		$ 4,343
Other current assets		443
Property, plant and equipment		26,005
Intangible assets		5,157
Long-term deferred income tax assets		15,111
Other non-current assets		17
Total assets acquired		51,076
Warranty reserves		733
Other current liabilities		2,762
Long-term capital leases and financing obligations		49,058
Other long-term liabilities		1,248
Total liabilities assumed		53,801
Total net identifiable assets (liabilities) acquired		(2,725)
Total consideration transferred		64,293
Plus: gain on bargain purchase		383
Less: total net identifiable assets (liabilities) acquired		(2,725)
Goodwill		$ 67,401