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	(1,577)			(1,577)
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	49,716			49,716
Other comprehensive loss	(121)					(121)
Stock-based compensation	55,871		55,871
Repurchase of outstanding common stock (in shares)		(1,677,433)
Repurchase of common stock	(79,739)				(79,739)
Treasury stock reissued (in shares)		1,176,826
Treasury stock reissued	(7,330)		(26,024)		18,694
Ending balance (in shares) at Oct. 28, 2018		65,779,522
Ending balance at Oct. 28, 2018	692,937	$ 785	444,903	561,589	(313,019)	(1,321)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative-effect adjustment to beginning balance | ASU 2014-09	0			0
Cumulative-effect adjustment to beginning balance | ASU 2016-16	20			20
Beginning balance (in shares) at Jul. 29, 2018		65,931,409
Beginning balance at Jul. 29, 2018	703,288	$ 785	442,964	549,404	(288,541)	(1,324)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	12,165			12,165
Other comprehensive loss	3					3
Stock-based compensation	12,222		12,222
Repurchase of outstanding common stock (in shares)		(536,680)
Repurchase of common stock	(30,000)				(30,000)
Treasury stock reissued (in shares)		384,793
Treasury stock reissued	(4,761)		(10,283)		5,522
Ending balance (in shares) at Oct. 28, 2018		65,779,522
Ending balance at Oct. 28, 2018	$ 692,937	$ 785	444,903	561,589	(313,019)	(1,321)
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	36,259			36,259
Other comprehensive loss	292					292
Stock-based compensation	28,193		28,193
Repurchase of outstanding common stock (in shares)		(925,743)
Repurchase of common stock	(42,636)				(42,636)
Treasury stock reissued (in shares)		1,888,870
Treasury stock reissued	$ (16,068)		(43,082)		27,014
Ending balance (in shares) at Oct. 27, 2019	66,201,382	66,201,382
Ending balance at Oct. 27, 2019	$ 688,721	$ 785	441,902	611,189	(361,840)	(3,315)
Beginning balance (in shares) at Jul. 28, 2019		66,314,933
Beginning balance at Jul. 28, 2019	689,540	$ 785	444,716	593,590	(345,810)	(3,741)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	17,599			17,599
Other comprehensive loss	426					426
Stock-based compensation	9,303		9,303
Repurchase of outstanding common stock (in shares)		(477,262)
Repurchase of common stock	(22,526)				(22,526)
Treasury stock reissued (in shares)		363,711
Treasury stock reissued	$ (5,621)		(12,117)		6,496
Ending balance (in shares) at Oct. 27, 2019	66,201,382	66,201,382
Ending balance at Oct. 27, 2019	$ 688,721	$ 785	$ 441,902	$ 611,189	$ (361,840)	$ (3,315)