Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance (in shares) at Jan. 30, 2016		135,531		18,307
Beginning Balance at Jan. 30, 2016	$ 639,788	$ 1,355	$ 435,881	$ (289,813)	$ 492,325	$ 40
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	91,229				91,229
Unrealized gains (losses) on marketable securities, net of taxes	(39)					(39)
Foreign currency translation adjustment	(29)					(29)
Issuance of common stock (in shares)		1,763
Issuance of common stock	4,359	$ 18	4,341
Dividends paid on common stock, $0.34, $0.33, and $0.32, as of February 2, 2019, February 3, 2018, January 28, 2017, respectively	(42,303)				(42,303)
Repurchase of common stock (in shares)		(8,541)		8,110
Repurchase of common stock	(101,878)	$ (85)	(5,512)	$ (96,281)	0
Share-based compensation	21,249		21,249
Excess tax benefit from share-based compensation	(3,203)		(3,203)
Ending Balance (in shares) at Jan. 28, 2017		128,753		26,417
Ending Balance at Jan. 28, 2017	609,173	$ 1,288	452,756	$ (386,094)	541,251	(28)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	101,000				101,000
Unrealized gains (losses) on marketable securities, net of taxes	(135)					(135)
Foreign currency translation adjustment	119					119
Issuance of common stock (in shares)		1,931
Issuance of common stock	2,127	$ 19	2,108
Dividends paid on common stock, $0.34, $0.33, and $0.32, as of February 2, 2019, February 3, 2018, January 28, 2017, respectively	(42,441)				(42,441)
Repurchase of common stock (in shares)		(3,213)		2,697
Repurchase of common stock	(34,138)	$ (32)	(6,735)	$ (27,371)	0
Share-based compensation	20,677		20,677
Ending Balance (in shares) at Feb. 03, 2018		127,471		29,114
Ending Balance at Feb. 03, 2018	656,382	$ 1,275	468,806	$ (413,465)	599,810	(44)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	35,613
Unrealized gains (losses) on marketable securities, net of taxes	189
Ending Balance (in shares) at Feb. 02, 2019		116,949		41,297
Ending Balance at Feb. 02, 2019	579,964	$ 1,169	486,406	$ (494,395)	587,145	(361)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of adoption of ASU 2018-02, ASU 2016-16 and ASU 2014-09 (see Note 1)	(5,054)				(5,015)	(39)
Beginning Balance (in shares) at Feb. 04, 2018		127,471		29,114
Beginning Balance at Feb. 04, 2018	651,328	$ 1,275	468,806	$ (413,465)	594,795	(83)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	35,613				35,613
Unrealized gains (losses) on marketable securities, net of taxes	189					189
Foreign currency translation adjustment	(467)					(467)
Issuance of common stock (in shares)		2,073
Issuance of common stock	1,548	$ 21	1,527
Dividends paid on common stock, $0.34, $0.33, and $0.32, as of February 2, 2019, February 3, 2018, January 28, 2017, respectively	(43,263)				(43,263)
Repurchase of common stock (in shares)		(12,595)		12,183
Repurchase of common stock	(84,767)	$ (127)	(3,710)	$ (80,930)
Share-based compensation	19,783		19,783
Ending Balance (in shares) at Feb. 02, 2019		116,949		41,297
Ending Balance at Feb. 02, 2019	$ 579,964	$ 1,169	$ 486,406	$ (494,395)	$ 587,145	$ (361)