Consoldiated Statements of Operations and Comprehensive Income (Parentheticals) (USD $) In Thousands	3 Months Ended
Apr. 30, 2011	May 01, 2010
Income Statement Parantheticals Abstract
Gain (Loss) on Marketable Securities Tax	$ (390)	$ 163
Unrealized (loss) gain on derivative financial instruments tax	$ 1,907	$ (721)

Total tax effect of the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges after taxes. The change includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 25

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