Recent Accounting Pronouncements (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Aug. 03, 2019	Aug. 04, 2018	Aug. 03, 2019	Aug. 04, 2018	Feb. 02, 2019
Adoption of ASU Consolidated Balance Sheet [Abstract]
Right-of-use assets	$ 218,443		$ 218,443		$ 0
Lease liabilities	242,159		242,159
Impairment of ROU	100		900
Inventories, net	270,563		270,563		280,287
Other current assets	5,711		5,711		16,343
Accounts payable	124,859		124,859		107,315
Other accrued expenses	17,706		17,706		10,174
Net sales	252,440	$ 211,123	595,735	$ 485,830
Cost of goods sold	176,067	144,772	400,759	322,706
Gross margin	76,373	66,351	194,976	163,124
Store operating, selling and administrative expenses	80,334	61,965	154,373	123,869
Income/(Loss) before provision for income taxes	(11,568)	(1,718)	25,729	26,847
Provision for income taxes	(2,790)	(496)	6,650	6,560
Net income (loss)	$ (8,778)	$ (1,222)	$ 19,079	$ 20,287
Diluted earnings/(loss) per share (in dollars per share)	$ (0.49)	$ (0.06)	$ 1.05	$ 1.06
Accounting Standards Update 2016-02 [Member]
Adoption of ASU Consolidated Balance Sheet [Abstract]
Right-of-use assets					234,000
Lease liabilities					265,600
Cumulative effect adjustment to opening retained earnings					2,080
Liability for unfavorable leases					2,000
Deferred rent					25,400
Impairment of ROU					$ 3,400