EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Feb. 02, 2013	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012	Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Basic and diluted earnings per share [Abstract]
Net income, in thousands	$ 19,359	$ 18,965	$ 7,895	$ 26,363	$ 15,824	$ 15,959	$ 5,940	$ 21,337	$ 72,582	$ 59,060	$ 46,400
Weighted average number of common shares outstanding (in shares)									26,132,000	26,978,000	28,426,000
Weighted average number of common shares outstanding and dilutive shares (in shares)									26,638,000	27,506,000	29,033,000
Basic earnings per share (in dollars per share)	$ 0.75	$ 0.73	$ 0.30	$ 1.00	$ 0.60	$ 0.60	$ 0.22	$ 0.78	$ 2.78	$ 2.19	$ 1.63
Diluted earnings per share (in dollars per share)	$ 0.73	$ 0.71	$ 0.30	$ 0.98	$ 0.59	$ 0.59	$ 0.21	$ 0.76	$ 2.72	$ 2.15	$ 1.60
Stock Options [Member]
Basic and diluted earnings per share [Abstract]
Dilutive equity awards (in shares)									372,000	177,000	264,000
Antidilutive securities excluded from the computation of earnings per share (in shares)									0
Nonvested Stock Awards [Member]
Basic and diluted earnings per share [Abstract]
Dilutive equity awards (in shares)									134,000	351,000	343,000
Antidilutive securities excluded from the computation of earnings per share (in shares)									42,700
Incremental dilutive impact if performance criteria had been achieved (in shares)									20,541