Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Apr. 02, 2011	Mar. 31, 2012	Apr. 02, 2011	Apr. 03, 2010
Tax on change in net unrealized loss on available-for- sale securities		$ 3,569	$ 2,176	$ 9,115
Cash dividends per share	$ 0.16	$ 0.76	$ 0.64	$ 0.60
Rate of equity components of debentures	2.625%	3.125%	2.625%
Additional Paid-in Capital
Rate of equity components of debentures	2.625%		2.625%
Retained Earnings
Cash dividends per share		$ 0.76	$ 0.64	$ 0.60
Accumulated Other Comprehensive Income (Loss)
Tax on change in net unrealized loss on available-for- sale securities		$ 3,569	$ 2,176	$ 9,115