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INCOME TAXES (Details) - USD ($) $ in Thousands	1 Months Ended	11 Months Ended	12 Months Ended
	Feb. 03, 2018	Dec. 31, 2017	Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017
Provision for income taxes:
Current federal income tax expense			$ 27,278	$ 46,158	$ 55,541
Current state income tax expense			4,857	3,960	6,029
Deferred income tax expense (benefit)			(1,099)	(340)	(3,260)
Total			$ 31,036	$ 49,778	$ 58,310
Reconciliation of effective tax rate to statutory rate:
Statutory rate	21.00%	35.00%	21.00%	33.70%	35.00%
State income tax effect			3.00%	1.90%	2.50%
Tax exempt interest income			(0.20%)	(0.20%)	(0.10%)
Other			0.70%	0.30%	(0.10%)
Effective tax rate			24.50%	35.70%	37.30%
Deferred income tax assets (liabilities):
Inventory	$ 4,368		$ 4,439	$ 4,368
Stock-based compensation	2,432		1,918	2,432
Accrued compensation	4,006		3,451	4,006
Accrued store operating costs	2,899		3,023	2,899
Realized and unrealized loss on securities	(270)		(147)	(270)
Gift certificates redeemable	1,295		1,135	1,295
Deferred rent liability	8,744		7,015	8,744
Property and equipment	(18,712)		(15,004)	(18,712)
Net deferred income tax asset	$ 4,762		$ 5,830	$ 4,762

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