CREDIT FACILITY (Details) - USD ($)	3 Months Ended		12 Months Ended
	Apr. 30, 2016	May. 02, 2015	Jan. 30, 2016
Credit facilities
Sublimit Availability	$ 42,100,000	$ 42,900,000	$ 42,900,000
Deferred financing costs gross	300,000
Line of credit facility, maximum borrowing capacity	250,000,000	200,000,000	250,000,000
Line of credit facility, current borrowing capacity	204,500,000	193,300,000	211,700,000
Outstanding borrowings	25,000,000	11,200,000	0
Utilization of credit facility at end of period	32,900,000	18,300,000	7,100,000
Availability	$ 171,600,000	$ 175,000,000	$ 204,600,000
Interest rate at end of period (as a percent)	1.80%	2.80%	4.00%
Average loan balance during the period	$ 0	$ 0	$ 0
Highest end of day loan balance during the period	$ 46,400	$ 50,400	$ 67,500
Average interest rate (as a percent)	2.60%	3.10%	2.70%
Merchandise Letters of Credit
Credit facilities
Letters of credit outstanding	$ 0	$ 0	$ 0
Standby Letters of Credit
Credit facilities
Letters of credit outstanding	7,900,000	$ 7,100,000	$ 7,100,000
Credit Agreement
Credit facilities
Letters of Credit sublimit	50,000,000
Borrowing capacity, accordion feature	$ 50,000,000
Line of credit facility, unused line fee percentage (as a percent)	0.25%
Deferred financing costs gross	$ 4,300,000
Deferred financing costs, remaining unamortized balance	1,200,000
Line of credit facility, maximum borrowing capacity	$ 250,000,000
Credit Agreement | Prime rate
Credit facilities
Basis spread on variable rate, low end of range (as a percent)	0.50%
Basis spread on variable rate, high end of range (as a percent)	0.75%
Credit Agreement | LIBOR
Credit facilities
Basis spread on variable rate, low end of range (as a percent)	1.25%
Basis spread on variable rate, high end of range (as a percent)	1.50%
Debt Instrument, Description of Variable Rate Basis	one, two, three or six
Credit Agreement | Merchandise Letters of Credit
Credit facilities
Letters of credit facility fee, low end of range (as a percent)	0.625%
Letters of credit facility fee, high end of range (as a percent)	0.75%
Credit Agreement | Standby Letters of Credit
Credit facilities
Letters of credit facility fee, low end of range (as a percent)	0.75%
Letters of credit facility fee, high end of range (as a percent)	1.00%