Note 3 - Marketable Securities

9 Months Ended

Dec. 01, 2013

Table Text Block [Abstract]

Marketable Securities [Table Text Block]

3.   MARKETABLE SECURITIES

All marketable securities are classified as available-for-sale and are carried at fair value, with the unrealized gains and losses, net of tax, included in comprehensive income (loss). Realized gains and losses, amortization of premiums and discounts, and interest and dividend income are included in interest and other income in the Consolidated Statements of Operations. The costs of securities sold are based on the specific identification method.

The following is a summary of available-for-sale securities:

	December 1, 2013
	Total		Level 1		Level 2		Level 3
U.S. Treasury and other government securities	$	134,266	$	134,266	$	-	$	-
U.S. corporate debt securities		28,315		21,215		7,100		-
Total marketable securities	$	162,581	$	155,481	$	7,100	$	-

	March 3, 2013
	Total		Level 1		Level 2		Level 3
U.S. Treasury and other government securities	$	58,299	$	58,299	$	-	$	-
U.S. corporate debt securities		30,800		20,859		9,941		-
Total marketable securities	$	89,099	$	79,158	$	9,941	$	-

At December 1, 2013 and March 3, 2013, the Company’s level 2 investments consisted of commercial paper which was not traded on a regular basis or in an active market, and the Company was unable to obtain pricing information on an on-going basis. Therefore, these investments were measured using quoted market prices for similar assets currently trading in an active market or using model-derived valuations in which all significant inputs are observable for substantially the full term of the asset.

The following table shows the amortized cost basis of, and gross unrealized gains and losses on, the Company’s available-for-sale securities:

	Amortized Cost Basis		Gross Unrealized Gains		Gross Unrealized Losses
December 1, 2013:
U.S. Treasury and other government securities	$	134,020	$	248	$	2
U.S. corporate debt securities		28,314		5		4
Total marketable securities	$	162,334	$	253	$	6
March 3, 2013:
U.S. Treasury and other government securities	$	48,293	$	7	$	9
U.S. corporate debt securities		40,859		12		63
Total marketable securities	$	89,152	$	19	$	72

The estimated fair values of such securities at December 1, 2013, by contractual maturity, are shown below:

Due in one year or less	$	105,656
Due after one year through five years		56,925
	$	162,581