QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Feb. 01, 2014	Nov. 02, 2013	Aug. 03, 2013	May 04, 2013	Feb. 02, 2013	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012
QUARTERLY FINANCIAL DATA (UNAUDITED) [Abstract]
Net sales	$ 217,767	$ 207,971	$ 186,235	$ 239,993	$ 217,407	$ 202,934	$ 165,445	$ 232,914	$ 851,965	$ 818,700	$ 732,645
Gross profit	77,973	76,488	63,927	90,877	78,489	75,440	56,525	88,428	309,265	298,882	262,408
Operating income	27,042	27,443	16,966	42,439	30,906	30,300	12,377	42,399	113,891	115,981	93,531
Net income	$ 16,870	$ 17,250	$ 10,542	$ 26,214	$ 19,359	$ 18,965	$ 7,895	$ 26,363	$ 70,877	$ 72,582	$ 59,060
Basic earnings per share (in dollars per share)	$ 0.65	$ 0.67	$ 0.41	$ 1.01	$ 0.75	$ 0.73	$ 0.30	$ 1.00	$ 2.74	$ 2.78	$ 2.19
Diluted earnings per share (in dollars per share)	$ 0.64	$ 0.66	$ 0.40	$ 1.00	$ 0.73	$ 0.71	$ 0.30	$ 0.98	$ 2.70	$ 2.72	$ 2.15