Consolidated Condensed Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 28, 2012	Oct. 30, 2011	Oct. 28, 2012	Oct. 30, 2011
Net income	$ 16,590	$ 26,979	$ 28,821	$ 76,699
Other comprehensive (loss) income, before tax:
Change in unrealized holding loss on available-for-sale investments	(4)	(82)	(37)	(212)
Change in unrealized loss on interest rate cap	(194)	0	(499)	0
Change in cumulative translation adjustment	84	(2)	203	(2)
Other comprehensive loss, before tax	(114)	(84)	(333)	(214)
Benefit for taxes related to items of other comprehensive (loss) income	72	19	189	48
Other comprehensive loss, net of tax	(42)	(65)	(144)	(166)
Total comprehensive income, net of tax	$ 16,548	$ 26,914	$ 28,677	$ 76,533