Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock, at Cost	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Jan. 26, 2014	$ 535,843	$ 785	$ 362,121	$ 373,836	$ (201,152)	$ 253
Beginning balance (in shares) at Jan. 26, 2014	67,283,221	67,283,221
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 27,947
Other comprehensive (loss) income, net of tax	(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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 11,497
Other comprehensive (loss) income, net of tax	490					490
Stock-based compensation	22,778		22,778
Repurchase of outstanding common stock	$ (57,311)				(57,311)
Repurchase of outstanding common stock (in shares)	(2,681,476)	(2,681,476)
Treasury stock reissued					14,105
Treasury stock reissued	$ (639)		(14,744)
Treasury stock reissued (in shares)	866,925	866,925
Other	$ (154)		(154)
Tax benefit from stock based compensation	32		32
Ending balance at Jan. 31, 2016	$ 528,051	$ 785	379,508	413,280	(266,175)	653
Ending balance (in shares) at Jan. 31, 2016	64,998,368	64,998,368
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 54,661			54,661
Other comprehensive (loss) income, net of tax	(1,947)					(1,947)
Stock-based compensation	26,249		26,249
Repurchase of outstanding common stock	$ (1,005)				(1,005)
Repurchase of outstanding common stock (in shares)	(39,024)	(39,024)
Treasury stock reissued					14,003
Treasury stock reissued	$ (816)		(14,819)
Treasury stock reissued (in shares)	833,739	833,739
Other	$ 70		0
Other					70
Ending balance at Jan. 29, 2017	$ 605,263	$ 785	$ 390,938	$ 467,941	$ (253,107)	$ (1,294)
Ending balance (in shares) at Jan. 29, 2017	65,793,083	65,793,083