Note 5 - Fair Value (Details) - Cash, Cash Equivalents and Short-Term Marketable Securities (USD $) In Thousands, unless otherwise specified	Jun. 29, 2014	Mar. 30, 2014
Cash and cash equivalents
Cash at financial institutions	$ 123,161	$ 9,978
Restricted cash	26,000
Cash equivalents
Money market funds		4,636
Total cash and cash equivalents	149,161	14,614
Available-for-sale securities
Short-term marketable securities		152,420
US Government Agencies Debt Securities [Member]
Available-for-sale securities
Short-term marketable securities		22,512
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities
Short-term marketable securities		2,772
Corporate Debt Securities [Member]
Available-for-sale securities
Short-term marketable securities		71,253
Asset-backed Securities [Member]
Available-for-sale securities
Short-term marketable securities		27,635
Collateralized Mortgage Backed Securities [Member]
Available-for-sale securities
Short-term marketable securities		$ 28,248

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Total amount of cash and cash equivalents and restricted cash.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

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Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer.

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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations.

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