Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Aug. 01, 2020	Aug. 03, 2019	Aug. 01, 2020	Aug. 03, 2019
Income Statement [Abstract]
Net sales	$ 441,607,000	$ 252,440,000	$ 711,445,000	$ 595,735,000
Cost of goods sold	278,010,000	176,067,000	473,701,000	400,759,000
Gross margin	163,597,000	76,373,000	237,744,000	194,976,000
Store operating, selling and administrative expenses	99,835,000	80,334,000	169,508,000	154,373,000
Goodwill impairment	0	0	19,661,000	0
Depreciation and amortization	7,484,000	7,680,000	14,354,000	14,903,000
Operating income (loss)	56,278,000	(11,641,000)	34,221,000	25,700,000
Interest expense (income), net	206,000	(73,000)	376,000	(29,000)
Income (loss) before provision for income taxes	56,072,000	(11,568,000)	33,845,000	25,729,000
Provision (benefit) for income taxes	15,717,000	(2,790,000)	8,777,000	6,650,000
Net income (loss)	$ 40,355,000	$ (8,778,000)	$ 25,068,000	$ 19,079,000
Basic (loss) earnings per share (in dollars per share)	$ 2.44	$ (0.49)	$ 1.52	$ 1.05
Diluted (loss) earnings per share (in dollars per share)	$ 2.38	$ (0.49)	$ 1.50	$ 1.05
Weighted-average shares outstanding:
Basic (in shares)	16,535	17,906	16,540	18,107
Diluted (in shares)	16,982	17,906	16,764	18,220