Income Taxes - Schedule of Gross Unrecognized Tax Benefits Rollforward (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Unrecognized Tax Benefits [Line Items]
Balance at beginning of year	$ 58,384	$ 57,510
Additions based on tax positions related to the current year	1,470	3,581
Additions for tax positions of prior years	183	140
Reductions for tax positions of prior years	(20,547)	(76)
Decreases relating to settlements with taxing authorities	(29,906)
Lapses of statute of limitations		(2,771)
Balance at end of year	$ 9,584	$ 58,384