Note 14. Stock Based Compensation (Detail) - Summary of Stock Option Transactions (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Mar. 27, 2011	Mar. 28, 2010	Oct. 23, 2008
Options outstanding	6,212,333	6,345,307	5,729,464	5,345,504	1,755,691
Weighted Average Exercise Price of Options Outstanding (in Dollars per share)	$ 7.48	$ 7.23	$ 7.61	$ 8.01
Weighted Average Remaining Contractual Term of Options Outstanding	5 years 14 days	4 years 244 days	4 years 270 days	5 years 138 days
Aggregate Intrinsic Value (in Dollars)	$ 19,199	$ 9,474	$ 147	$ 1,882
In the Money Options Vested and Exercisable	1,481,000	1,193,000	103,000	235,000
Options Granted	2,540,010	3,100,595	2,113,190
Weighted average Exercise Price per Share of Options Granted (in Dollars per share)	$ 8.32	$ 6.33	$ 6.60
Options Exercised	(875,459)	(422,749)	(125,920)
Weighted Average Exercise Price of Options Exercised (in Dollars per share)	$ 6.92	$ 6.54	$ 6.07
Options Cancelled	(903,781)	(526,574)	(308,595)
Weighted Average Exercise Price of Options Cancelled (in Dollars per share)	$ 9.67	$ 8.15	$ 11.02
Options Forfeited	(893,744)	(1,535,429)	(1,294,715)
Weighted Average Exercise Price of Options Forfeited (in Dollars per share)	$ 6.41	$ 6.70	$ 6.93
Vested and expected to vest, March 31, 2013	5,326,478
Vested and expected to vest, March 31, 2013 (in Dollars per share)	$ 7.44
Vested and expected to vest, March 31, 2013	4 years 324 days
Vested and expected to vest, March 31, 2013 (in Dollars)	16,758
Vested and exercisable, March 31, 2013	1,642,315
Vested and exercisable, March 31, 2013 (in Dollars per share)	$ 7.54
Vested and exercisable, March 31, 2013	3 years 116 days
Vested and exercisable, March 31, 2013 (in Dollars)	$ 5,271