CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Accounting Standards Update 2016-13	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Retained Earnings Accounting Standards Update 2016-13
Beginning balance at Jan. 25, 2020	$ 868,604	$ (471)	$ 10,528	$ 30,158	$ (1,781)	$ 829,699	$ (471)
Beginning balance (shares) at Jan. 25, 2020			31,583,938
Increase (Decrease) in Stockholders' Equity
Stock options exercised	5,425		$ 92	5,333
Stock options exercised (shares)			275,275
Stock-based compensation	10,490		$ 1	10,489
Stock-based compensation (shares)			4,313
Issuance of restricted stock, net of tax withholdings	(500)		$ 15	(515)
Issuance of restricted stock, net of tax withholdings (shares)			45,640
Equity component of the settlement of 0.75% convertible senior notes due 2021, net of taxes	(8,976)			(8,976)
Purchase of warrants	(7,176)			(7,176)
Settlement of convertible note hedges related to extinguishment of convertible debt	7,197			7,197
Other comprehensive income	(1)				(1)
Net income	38,532					38,532
Ending balance at Oct. 24, 2020	913,124		$ 10,636	36,510	(1,782)	867,760
Ending balance (shares) at Oct. 24, 2020			31,909,166
Beginning balance at Jul. 25, 2020	873,748		$ 10,612	31,093	(1,791)	833,834
Beginning balance (shares) at Jul. 25, 2020			31,836,930
Increase (Decrease) in Stockholders' Equity
Stock options exercised	1,816		$ 21	1,795
Stock options exercised (shares)			62,748
Stock-based compensation	3,796		$ 0	3,796
Stock-based compensation (shares)			965
Issuance of restricted stock, net of tax withholdings	(170)		$ 3	(173)
Issuance of restricted stock, net of tax withholdings (shares)			8,523
Other comprehensive income	9				9
Net income	33,926					33,926
Ending balance at Oct. 24, 2020	913,124		$ 10,636	36,510	(1,782)	867,760
Ending balance (shares) at Oct. 24, 2020			31,909,166
Beginning balance at Jan. 30, 2021	$ 811,308		$ 10,205	2,284	(1,769)	800,588
Beginning balance (shares) at Jan. 30, 2021	30,615,167		30,615,167
Increase (Decrease) in Stockholders' Equity
Stock options exercised	$ 366		$ 4	362
Stock options exercised (shares)			11,169
Stock-based compensation	7,838		$ 1	7,838
Stock-based compensation (shares)			1,765
Issuance of restricted stock, net of tax withholdings	(6,520)		$ 60	(2,748)		(3,832)
Issuance of restricted stock, net of tax withholdings (shares)			180,023
Repurchase of common stock (in shares)			(631,638,000)
Repurchase of common stock	(50,000)		$ (211)	(3,793)		(45,996)
Other comprehensive income	2				2
Net income	47,780					47,780
Ending balance at Oct. 30, 2021	$ 810,774		$ 10,059	3,942	(1,767)	798,540
Ending balance (shares) at Oct. 30, 2021	30,176,486		30,176,486
Beginning balance at Jul. 31, 2021	$ 780,421		$ 10,057	2,309	(1,768)	769,823
Beginning balance (shares) at Jul. 31, 2021			30,170,076
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	1,789			1,789
Stock-based compensation (shares)			524
Issuance of restricted stock, net of tax withholdings	(154)		$ 2	(156)
Issuance of restricted stock, net of tax withholdings (shares)			5,886
Other comprehensive income	1				1
Net income	28,717					28,717
Ending balance at Oct. 30, 2021	$ 810,774		$ 10,059	$ 3,942	$ (1,767)	$ 798,540
Ending balance (shares) at Oct. 30, 2021	30,176,486		30,176,486