Restructuring and Cost Management Plans Q4 FY17 Restructuring Plan Accrual Reconciliation (Details) - USD ($) $ in Thousands		6 Months Ended		9 Months Ended		12 Months Ended
		Jul. 01, 2017		Dec. 30, 2017		Apr. 01, 2017		Apr. 02, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				$ 2,608		$ 4,996
Q4 FY17 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				1,718		4,135		$ 0
Restructuring and Related Cost, Incurred Cost		$ 24,804		17,218		7,587
Payments for Restructuring				(7,070)		(407)
Restructuring Reserve, Settled without Cash				(12,565)		(3,045)
Site Closures [Member] | Q4 FY17 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				323		888		0
Restructuring and Related Cost, Incurred Cost		1,714		824		888
Payments for Restructuring				(1,389)		0
Restructuring Reserve, Settled without Cash				0		0
Current Asset Impairments and Other Gross Profit [Member] | Q4 FY17 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	[1]			652		0		0
Restructuring and Related Cost, Incurred Cost		14,947	[2]	13,278	[1]	1,669	[1]
Payments for Restructuring	[1]			(1,750)		0
Restructuring Reserve, Settled without Cash	[1]			(10,876)		(1,669)
Non-Current Asset Impairments [Member] | Q4 FY17 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				0		0		0
Restructuring and Related Cost, Incurred Cost		3,032		1,657		1,376
Payments for Restructuring						0
Cash receipt for disposal of restructured assets				32
Restructuring Reserve, Settled without Cash				(1,689)		(1,376)
Other Restructuring [Member] | Q4 FY17 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				0		0		0
Restructuring and Related Cost, Incurred Cost		239		175		66
Payments for Restructuring				(175)		(66)
Restructuring Reserve, Settled without Cash				0		0
Employee Severance [Member] | Q4 FY17 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				743		3,247		$ 0
Restructuring and Related Cost, Incurred Cost		$ 4,872		1,284		3,588
Payments for Restructuring				(3,788)		(341)
Restructuring Reserve, Settled without Cash				$ 0		$ 0

[1] (1) Asset and facilities costs include inventory charges recorded in cost of sales.

[2] (1) Current asset impairments include inventory charges recorded in cost of sales.