Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (USD $) In Thousands, except Share data	Total	Common stock	Class B Common stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income
Beginning Balance at Jan. 29, 2011	$ 1,363,581	$ 938	$ 250	$ 625,184	$ 730,468	$ 6,741
Beginning Balance, Shares at Jan. 29, 2011		93,768,978	24,960,870
Exercise of stock options	14,077	11		14,066
Exercise of stock options, Shares		1,159,474
Restricted stock vested		3		(3)
Restricted stock vested, Shares		282,262
Repurchase of common stock	(3,321)	(1)		(3,320)
Repurchase of common stock, Shares		(83,745)
Net income	37,498				37,498
Stock-based compensation	6,504			6,504
Total tax benefit from exercise of stock options	11,795			11,795
Foreign currency translation adjustment, net of taxes of $13	22					22
Unrealized gain on securities available-for-sale, net of taxes of $1,202	2,014					2,014
Ending Balance at Apr. 30, 2011	$ 1,432,170	$ 951	$ 250	$ 654,226	$ 767,966	$ 8,777
Ending Balance, Shares at Apr. 30, 2011		95,126,969	24,960,870