Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Income Statement [Abstract]
Net sales	$ 419,257,000	$ 441,607,000	$ 926,117,000	$ 711,445,000
Cost of goods sold	$ 255,930,000	$ 278,010,000	$ 552,827,000	$ 473,701,000
Cost of goods sold, as a percent to sales	61.00%	63.00%	59.70%	66.60%
Gross margin	$ 163,327,000	$ 163,597,000	$ 373,290,000	$ 237,744,000
Gross margin, as a percent to sales	39.00%	37.00%	40.30%	33.40%
Store operating, selling, and administrative expenses	$ 93,442,000	$ 99,835,000	$ 185,181,000	$ 169,508,000
Store operating, selling and administrative expenses, as a percent to sales	22.30%	22.60%	20.00%	23.80%
Goodwill impairment	$ 0	$ 0	$ 0	$ 19,661,000
Goodwill impairment, as a percent to sales	0.00%	0.00%	0.00%	2.80%
Depreciation and amortization	$ 8,385,000	$ 7,484,000	$ 16,459,000	$ 14,354,000
Depreciation and amortization, as a percent to sales	2.00%	1.70%	1.80%	2.00%
Operating income	$ 61,500,000	$ 56,278,000	$ 171,650,000	$ 34,221,000
Operating income, as a percent to sales	14.70%	12.70%	18.50%	4.80%
Interest expense, net	$ 28,000	$ 206,000	$ 127,000	$ 376,000
Interest expense (income), net, as a percent to sales	0.00%	0.00%	0.00%	0.10%
Income before provision for income taxes	$ 61,472,000	$ 56,072,000	$ 171,523,000	$ 33,845,000
Income before provision for income taxes, as a percent to sales	14.70%	12.70%	18.50%	4.80%
Provision for income taxes	$ 14,776,000	$ 15,717,000	$ 40,061,000	$ 8,777,000
Provision for income taxes, as a percent to sales	3.50%	3.60%	4.30%	1.20%
Net income	$ 46,696,000	$ 40,355,000	$ 131,462,000	$ 25,068,000
Net income, as a percent to sales	11.10%	9.10%	14.20%	3.50%
Basic earnings per share (in dollars per share)	$ 2.98	$ 2.44	$ 8.21	$ 1.52
Diluted earnings per share (in dollars per share)	$ 2.86	$ 2.38	$ 7.90	$ 1.50
Weighted-average shares:
Basic (in shares)	15,691	16,535	16,008	16,540
Diluted (in shares)	16,305	16,982	16,635	16,764