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Condensed Consolidated Statements Of Comprehensive Income (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Aug. 03, 2013
Jul. 28, 2012
Aug. 03, 2013
Jul. 28, 2012
Statement Of Other Comprehensive Income [Abstract]        
Net income $ 43,588 $ 53,395 $ 94,710 $ 107,040
Unrealized (losses) gains on marketable securities, net of taxes (88) 101 (151) (21)
Comprehensive Income $ 43,500 $ 53,496 $ 94,559 $ 107,019