Comprehensive Income (Detail) (USD $) In Thousands	3 Months Ended			6 Months Ended
	Jul. 30, 2011	Jul. 31, 2010		Jul. 30, 2011	Jul. 31, 2010
Comprehensive Income (Loss) [Line Items]
Net income	$ 19,669	$ 9,663		$ 47,994	$ 20,585
Other comprehensive (loss) income:
Temporary impairment reversal related to ARS, net of tax		(1,057)	[1]		(361)	[1]
Foreign currency translation adjustment	(881)	(749)		4,620	2,773
Other comprehensive (loss) income:	(881)	(1,806)		4,620	2,412
Total comprehensive income	$ 18,788	$ 7,857		$ 52,614	$ 22,997

[1] Amounts are shown net of tax of $1.4 million and $1.0 million for the 13 and 26 weeks ended July 31, 2010, respectively.