Fair Value Of Financial Instruments (Tables)

3 Months Ended

12 Months Ended

Jun. 25, 2011

Mar. 26, 2011

Fair Value Of Financial Instruments

Schedule Of Carrying Amount And Fair Value Of Financial Instruments

	June 25, 2011		March 26, 2011
Financial instruments	Carrying Amount	Fair Value	Carrying Amount	Fair Value
Cash and cash equivalents	$           41,490	$          41,490	$           37,039	$           37,039
Restricted investments	5,755	5,755	5,786	5,786
Marketable securities	107,016	107,016	159,528	159,528
Long-term marketable securities	1,334	1,334	12,702	12,702
	$         155,595	$        155,595	$         215,055	$         215,055

Schedule Of Available-For-Sale Securities

	Amortized Cost	Gross Unrealized Gains	Gross Unrealized Losses	Estimated Fair Value (Net Carrying Amount)
Corporate securities – U.S.	$          43,723	$                 26	$                 (30)	$                  43,719
U.S. Government securities	21,485	9	-	21,494
Agency discount notes	10,841	6	-	10,847
Commercial paper	32,280	10	-	32,290
Total securities	$        108,329	$                 51	$                 (30)	$                108,350

	Amortized Cost	Gross Unrealized Gains	Gross Unrealized Losses	Estimated Fair Value (Net Carrying Amount)
Corporate securities – U.S.	$          64,228	$                 22	$                 (38)	$                  64,212
U.S. Government securities	35,268	13	-	35,281
Agency discount notes	16,588	5	(2)	16,591
Commercial paper	56,130	23	(7)	56,146
Total securities	$        172,214	$                 63	$                 (47)	$                172,230