Fair Value Measurements (Tables)

6 Months Ended

Jul. 30, 2011

Fair Value Measurements

Financial Assets Valued On A Recurring Or Non-Recurring Basis, Based On The Priority Of The Inputs To The Valuation Technique

		Fair Value Measurements at Reporting Date Using
Current Assets	Balance as of July 30, 2011	Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs          (Level 2)		Significant Unobservable Inputs               (Level 3)
Cash equivalents:
Money market accounts	$         9,895	$              9,895	$                   –		$               –
Marketable securities:
Municipal securities	136,826	–	136,826		–
U.S. government securities	100,719	52,890	47,829		–
Corporate bonds	162,914	–	162,914		–
Asset-backed securities	616	–	616		–
Commercial paper	45,064	–	45,064		–
Certificates of deposit	2,072	–	2,072		–
Non Current Assets
Deferred compensation plan	4,256	4,256	–		–
Total	$     462,362	$         67,041	$        395,321		$              –
Current Assets	Balance as of January 29, 2011
Cash equivalents:
Money market accounts	$         5,397	$                5,397	$                   –	$               –
Marketable securities:
Variable rate demand notes	319,220	–	319,220	–
Municipal securities	151,159	–	151,159	–
U.S. government securities	58,554	58,554	–	–
Corporate bonds	2,055	–	2,055	–
Asset-backed securities	3,031	–	3,031	–
Non Current Assets
Deferred compensation plan	4,143	4,143	–	–
Total	$     543,559	$              68,094	$        475,465	$               –
Current Assets	Balance as of July 31, 2010
Cash equivalents:
Money market accounts	$         1,467	$              1,467	$                   –	$               –
Marketable securities:
Variable rate demand notes	230,728	–	230,728	–
Municipal securities	158,557	–	158,557	–
U.S. government securities	59,130	59,130	–	–
Corporate bonds	12,453	–	12,453	–
Asset-backed securities	8,961	–	8,961	–
Non Current Assets
Deferred compensation plan	3,815	3,815	–	–
Total	$     475,111	$     64,412	$       410,699	$               –