- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ References+ Details

Fair Value (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended
Fair Value (Narrative) (Details) (USD $)	Jun. 30, 2012	Mar. 31, 2012	Apr. 02, 2011	Apr. 03, 2010
Auction Rate Securities, estimated fair value	$ 13,600,000
ARS redemptions at par value	12,750,000	4,700,000	36,450,000	19,250,000
ARS redemptions at carrying value	11,772,000
Unrealized Loss	1,700,000	2,150,000
Maximum [Member]
Liquidity discount	150
Market recovery period	5 years
Minimum [Member]
Liquidity discount	125
Market recovery period	3 years
Standard & Poor's, AAA Rating [Member]
Auction Rate Securities, Noncurrent	2,500,000
Standard & Poor's, AA+ Rating [Member]
Auction Rate Securities, Noncurrent	12,800,000
Fitch, A Rating [Member] \| Standard & Poor's, AA+ Rating [Member]
Auction Rate Securities, Noncurrent	$ 12,800,000