Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Apr. 03, 2015	Apr. 04, 2014
Income Tax Contingency [Line Items]
Unrealized excess tax benefits associated with share based compensation	$ 48,400,000
Realized excess tax benefits	0
Valuation allowance	15,550,000	12,832,000
Valuation allowance related to primarily to state net operating loss carryforwards	2,700,000
Impact on effective tax rate	34,000,000
Reasonably possible change in unrecognized tax benefits in the next twelve months	0
Accrued interest or penalties associated with uncertain tax positions	0	0
Tax Credit Carryforward Alternative Minimum Tax [Member]
Income Tax Contingency [Line Items]
Tax credit carryforward amount	400,000
Tax Credit Carryforward Foreign [Member]
Income Tax Contingency [Line Items]
Tax credit carryforward amount	1,100,000
Tax credit carryforwards expiration beginning date	Mar. 28, 2020
Federal [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	703,400,000
Operating loss carryforwards expiration beginning date	Mar. 30, 2019
Tax years subject to examination	2012
Federal [Member] | Research [Member]
Income Tax Contingency [Line Items]
Tax credit carryforward amount	84,200,000
Federal [Member] | Research [Member] | Minimum [Member]
Income Tax Contingency [Line Items]
Tax credit carryforwards expiration beginning date	Mar. 29, 2025
State [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	557,800,000
Operating loss carryforwards expiration beginning date	Apr. 04, 2015
Tax years subject to examination	2011
State [Member] | Research [Member]
Income Tax Contingency [Line Items]
Tax credit carryforward amount	$ 92,700,000
State [Member] | Research [Member] | Minimum [Member]
Income Tax Contingency [Line Items]
Tax credit carryforwards expiration beginning date	Apr. 01, 2017
Foreign country [Member]
Income Tax Contingency [Line Items]
Tax years subject to examination	2011