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. 25, 2015	$ 551,358	$ 785	$ 371,596	$ 401,783	$ (222,969)	$ 163
Beginning balance (in shares) at Jan. 25, 2015	66,812,919	66,812,919
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 11,497			11,497
Other comprehensive income (loss), 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)
Other	(154)		(154)
Tax benefit from stock-based compensation	$ 32		32
Treasury stock reissued (in shares)	866,925	866,925
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 income (loss), 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)
Other					70
Other	$ 70
Treasury stock reissued (in shares)	833,739	833,739
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 11,821
Beginning balance at Jan. 29, 2017	$ 605,263	$ 785	390,938	467,941	(253,107)	(1,294)
Beginning balance (in shares) at Jan. 29, 2017	65,793,083	65,793,083
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 36,426			36,426
Other comprehensive income (loss), net of tax	94					94
Stock-based compensation	45,091		45,091
Repurchase of outstanding common stock	$ (14,849)				(14,849)
Repurchase of outstanding common stock (in shares)	(442,607)	(442,607)
Treasury stock reissued					15,982
Treasury stock reissued	$ (4,991)		(20,973)
Treasury stock reissued (in shares)	929,653	929,653
Ending balance at Jan. 28, 2018	$ 665,013	$ 785	$ 415,056	502,346	$ (251,974)	$ (1,200)
Ending balance (in shares) at Jan. 28, 2018	66,280,129	66,280,129
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative-effect adjustment to beginning balance from adoption of ASU 2016-09 (See Note 2)				(2,021)
Cumulative-effect adjustment to beginning balance from adoption of ASU 2016-09 (See Note 2)	$ (2,021)			$ (2,021)