Unaudited Consolidated Condensed Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 28, 2013	Jul. 29, 2012	Jul. 28, 2013	Jul. 29, 2012
Net income	$ 19,112	$ 10,022	$ 33,889	$ 12,231
Other comprehensive income (loss), before tax:
Change in unrealized holding loss on available-for-sale investments	(7)	(9)	(8)	(33)
Change in unrealized income (loss) on interest rate cap	288	(305)	47	(305)
Less: Reclassification adjustments for losses on interest rate cap included in interest expense	(10)	0	(19)	0
Change in cumulative translation adjustment	0	(257)	0	119
Other comprehensive income (loss), before tax	291	(571)	58	(219)
(Benefit) provision for taxes related to items of other comprehensive income (loss)	(106)	113	(21)	117
Other comprehensive income (loss), net of tax	185	(458)	37	(102)
Total comprehensive income, net of tax	$ 19,297	$ 9,564	$ 33,926	$ 12,129