Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock, at Cost	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Jan. 29, 2012	$ 630,188	$ 785	$ 358,327	$ 496,363	$ (225,822)	$ 535
Beginning balance (in shares) at Jan. 29, 2012	64,964,780	64,964,780
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	41,939			41,939
Other comprehensive loss	(182)					(182)
Stock-based compensation	21,382		21,382
Repurchase of outstanding common stock	(7,769)				(7,769)
Repurchase of outstanding common stock (in shares)	(273,139)	(273,139)
Treasury stock reissued	12,803		(20,184)		32,987
Treasury stock reissued (in shares)	1,915,706	1,915,706
Tax (shortfall) benefit from stock based compensation	(3,535)		(3,535)
Ending balance at Jan. 27, 2013	694,826	785	355,990	538,302	(200,604)	353
Ending balance (in shares) at Jan. 27, 2013	66,607,347	66,607,347
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(164,466)			(164,466)
Other comprehensive loss	(100)					(100)
Stock-based compensation	24,991		24,991
Repurchase of outstanding common stock	(30,000)				(30,000)
Repurchase of outstanding common stock (in shares)	(1,034,491)	(1,034,491)
Treasury stock reissued	5,876		(23,576)		29,452
Treasury stock reissued (in shares)	1,710,365	1,710,365
Tax (shortfall) benefit from stock based compensation	4,716		4,716
Ending balance at Jan. 26, 2014	535,843	785	362,121	373,836	(201,152)	253
Ending balance (in shares) at Jan. 26, 2014	67,283,221	67,283,221
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	27,947			27,947
Other comprehensive loss	(90)					(90)
Stock-based compensation	26,856		26,856
Repurchase of outstanding common stock	(40,906)				(40,906)
Repurchase of outstanding common stock (in shares)	(1,578,869)	(1,578,869)
Treasury stock reissued	1,708		(17,381)		19,089
Treasury stock reissued (in shares)	1,108,567	1,108,567
Ending balance at Jan. 25, 2015	$ 551,358	$ 785	$ 371,596	$ 401,783	$ (222,969)	$ 163
Ending balance (in shares) at Jan. 25, 2015	66,812,919	66,812,919