Note 18. Income Taxes (Detail) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2013	Apr. 01, 2012	Mar. 27, 2011	Mar. 28, 2010
Undistributed Earnings of Foreign Subsidiaries	$ 6,300,000	$ 6,300,000
Valuation Allowance, Deferred Tax Asset, Change in Amount	100,000	(6,700,000)	13,900,000	23,500,000
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	7,500,000	7,500,000
Unrecognized Tax Benefits	15,465,000	15,465,000	16,820,000	16,714,000	15,863,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	12,900,000	12,900,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	1,400,000	1,400,000
Canada [Member]
Operating Loss Carryforwards	$ 4,300,000	$ 4,300,000