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Condensed Consolidated Income Statements Of Income and Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Nov. 01, 2014 | Nov. 02, 2013 | Nov. 01, 2014 | Nov. 02, 2013
OtherComprehensiveIncomeLossTaxParentheticalDisclosuresAbstract |  |  |  |
Tax Effect of Unrealized Gains (Losses) On Available-For-Sale Securities | $ (21) | $ 188 | $ 0 | $ (18)

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- Definition Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e,f) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 + Details
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