Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Apr. 04, 2014	Mar. 29, 2013
Income Taxes [Line Items]
Unrealized excess tax benefits associated with share based compensation	$ 35,200,000
Realized excess tax benefits	0
Valuation allowance	12,832,000	15,965,000
Valuation allowance related to primarily to state net operating loss carryforwards	3,100,000
Impact on effective tax rate	30,300,000
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 Taxes [Line Items]
Tax credit carryforward amount	400,000
Tax Credit Carryforward Foreign [Member]
Income Taxes [Line Items]
Tax credit carryforward amount	1,000,000
Tax credit carryforwards expiration beginning date	Mar. 28, 2020
Federal [Member]
Income Taxes [Line Items]
Operating loss carryforwards	787,700,000
Operating loss carryforwards expiration beginning date	Mar. 30, 2019
Tax years subject to examination	2011
Federal [Member] | Research [Member]
Income Taxes [Line Items]
Tax credit carryforward amount	72,500,000
Federal [Member] | Research [Member] | Minimum [Member]
Income Taxes [Line Items]
Tax credit carryforwards expiration beginning date	Mar. 29, 2025
State [Member]
Income Taxes [Line Items]
Operating loss carryforwards	615,000,000
Operating loss carryforwards expiration beginning date	Mar. 30, 2013
Tax years subject to examination	2010
State [Member] | Research [Member]
Income Taxes [Line Items]
Tax credit carryforward amount	$ 81,300,000
State [Member] | Research [Member] | Minimum [Member]
Income Taxes [Line Items]
Tax credit carryforwards expiration beginning date	Apr. 01, 2017
Foreign country [Member]
Income Taxes [Line Items]
Tax years subject to examination	2010