Quarterly Results of Operations and Seasonality (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 01, 2020	Nov. 02, 2019	Aug. 03, 2019	May 04, 2019	Feb. 02, 2019	Nov. 03, 2018	Aug. 04, 2018	May 05, 2018	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 687,130	$ 377,438	$ 417,400	$ 364,762	$ 602,684	$ 312,823	$ 347,734	$ 296,322	$ 1,846,730	$ 1,559,563	$ 1,278,208
Gross profit	289,128	118,682	146,171	119,985	244,005	102,090	121,752	97,238	673,966	565,085	463,413
Net income	$ 110,374	$ 10,189	$ 28,831	$ 25,662	$ 89,262	$ 13,516	$ 25,063	$ 21,804	$ 175,056	$ 149,645	$ 102,451
Basic (loss) income per common share (dollars per share)	$ 1.98	$ 0.18	$ 0.52	$ 0.46	$ 1.60	$ 0.24	$ 0.45	$ 0.39	$ 3.14	$ 2.68	$ 1.86
Diluted (loss) income per common share (dollars per share)	$ 1.97	$ 0.18	$ 0.51	$ 0.46	$ 1.59	$ 0.24	$ 0.45	$ 0.39	$ 3.12	$ 2.66	$ 1.84