Condensed Consolidated Statements of Stockholders' Equity Statement - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock, at Cost	Accumulated Other Comprehensive (Loss) Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative-effect adjustment to beginning balance | ASU 2014-09	$ 11,104			$ 11,104
Cumulative-effect adjustment to beginning balance | ASU 2016-16	(1,597)			(1,597)
Beginning balance (in shares) at Jan. 28, 2018		66,280,129
Beginning balance at Jan. 28, 2018	665,013	$ 785	$ 415,056	502,346	$ (251,974)	$ (1,200)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	37,551			37,551
Other comprehensive loss	(124)					(124)
Stock-based compensation	43,649		43,649
Repurchase of outstanding common stock (in shares)		(1,140,753)
Repurchase of outstanding common stock	(49,739)				(49,739)
Treasury stock reissued (in shares)		792,033
Treasury stock reissued	(2,569)		(15,741)		13,172
Ending balance (in shares) at Jul. 29, 2018		65,931,409
Ending balance at Jul. 29, 2018	703,288	$ 785	442,964	549,404	(288,541)	(1,324)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative-effect adjustment to beginning balance				(3)
Cumulative-effect adjustment to beginning balance | ASU 2016-16	(3)
Beginning balance (in shares) at Apr. 29, 2018		66,140,592
Beginning balance at Apr. 29, 2018	693,354	$ 785	438,364	524,238	(268,864)	(1,169)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	25,169			25,169
Other comprehensive loss	(155)					(155)
Stock-based compensation	10,175		10,175
Repurchase of outstanding common stock (in shares)		(495,609)
Repurchase of outstanding common stock	(24,414)				(24,414)
Treasury stock reissued (in shares)		286,426
Treasury stock reissued	(838)		(5,575)		4,737
Ending balance (in shares) at Jul. 29, 2018		65,931,409
Ending balance at Jul. 29, 2018	$ 703,288	$ 785	442,964	549,404	(288,541)	(1,324)
Beginning balance (in shares) at Jan. 27, 2019	65,238,255	65,238,255
Beginning balance at Jan. 27, 2019	$ 682,681	$ 785	456,791	574,930	(346,218)	(3,607)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	18,660			18,660
Other comprehensive loss	(134)					(134)
Stock-based compensation	18,890		18,890
Repurchase of outstanding common stock (in shares)		(448,481)
Repurchase of outstanding common stock	(20,110)				(20,110)
Treasury stock reissued (in shares)		1,525,159
Treasury stock reissued	$ (10,447)		(30,965)		20,518
Ending balance (in shares) at Jul. 28, 2019	66,314,933	66,314,933
Ending balance at Jul. 28, 2019	$ 689,540	$ 785	444,716	593,590	(345,810)	(3,741)
Beginning balance (in shares) at Apr. 28, 2019		66,644,921
Beginning balance at Apr. 28, 2019	695,226	$ 785	437,278	588,224	(327,442)	(3,619)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,366			5,366
Other comprehensive loss	(122)					(122)
Stock-based compensation	8,526		8,526
Repurchase of outstanding common stock (in shares)		(446,270)
Repurchase of outstanding common stock	(20,000)				(20,000)
Treasury stock reissued (in shares)		116,282
Treasury stock reissued	$ 544		(1,088)		1,632
Ending balance (in shares) at Jul. 28, 2019	66,314,933	66,314,933
Ending balance at Jul. 28, 2019	$ 689,540	$ 785	$ 444,716	$ 593,590	$ (345,810)	$ (3,741)