Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 26, 2014	Oct. 27, 2013	Oct. 26, 2014	Oct. 27, 2013
Net income	$ 17,623	$ 12,453	$ 43,388	$ 46,342
Other comprehensive loss, before tax:
Change in unrealized holding loss on available-for-sale investments	0	3	(1)	(5)
Change in unrealized (loss) income on interest rate cap	(90)	(255)	(251)	(208)
Reclassification to interest expense	71	27	151	46
Other comprehensive (loss) income, before tax	(19)	(225)	(101)	(167)
(Provision) benefit for taxes related to items of other comprehensive loss	(26)	82	(14)	61
Other comprehensive (loss) income, net of tax	(45)	(143)	(115)	(106)
Total comprehensive income	$ 17,578	$ 12,310	$ 43,273	$ 46,236