Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Apr. 03, 2011
Income Taxes [Line Items]
Net tax benefit resulting from sale of the IB Business		$ 5,600,000
Valuation allowance, Amount	1,200,000	1,500,000
Deferred tax asset, net of federal benefit, related to state research tax credit carryforwards	10,900,000
Undistributed earnings of foreign subsidiaries	327,800,000
Income tax benefit related to a matter effectively settled with the IRS	9,500,000
Federal and state income tax payments	23,434,000	25,311,000	17,000,000
Percentage of tax benefit realized	50.00%
Income tax benefit resulting from the remeasurement of an uncertain tax position	4,800,000
Unrecognized tax benefit state income taxes	8,400,000
Net tax benefits from state income taxes	1,200,000
Unrecognized tax benefits interest expense and penalties	1,200,000	6,500,000
Recognized interest expense, net of the related tax effect, and penalties aggregate	1,000,000	1,000,000	100,000
Reduction in liability of uncertain tax position	3,300,000
Settlement with Taxing Authority [Member]
Income Taxes [Line Items]
Federal and state income tax payments	32,800,000
Federal tax carryforwards [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	15,900,000
Operating loss carryforwards, Expiration Dates	2027 and 2029
State tax carryforwards [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	79,900,000
Operating loss carryforwards, Expiration Dates	2017 and 2032
State capital loss carryovers	58,700,000
State capital loss carryovers, expiration dates	2014 and 2017
State tax credit carryforwards	16,800,000
State and foreign tax authority [Member]
Income Taxes [Line Items]
With limited exceptions, year which prior years' tax returns are no longer subject to tax examination	2008
Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Income tax examination, year(s) under examination	2008 and 2009
Discontinued operations [Member]
Income Taxes [Line Items]
Income tax provision (benefit) from discontinued operations	$ 300,000	$ 9,400,000	$ 5,900,000