CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	$ 851,965	$ 818,700	$ 732,645
Cost of goods sold, including distribution center and store occupancy costs	542,700	519,818	470,237
Gross profit	309,265	298,882	262,408
Store operating, selling and administrative expenses	181,527	169,872	155,672
Depreciation and amortization	13,847	13,029	13,205
Operating income	113,891	115,981	93,531
Interest income	11	14	25
Interest expense	(199)	(182)	(242)
Interest expense, net	(188)	(168)	(217)
Income before provision for income taxes	113,703	115,813	93,314
Provision for income taxes	42,826	43,231	34,254
Net income	$ 70,877	$ 72,582	$ 59,060
Basic earnings per share (in dollars per share)	$ 2.74	$ 2.78	$ 2.19
Diluted earnings per share (in dollars per share)	$ 2.70	$ 2.72	$ 2.15
Weighted average shares outstanding:
Basic (in shares)	25,870	26,132	26,978
Diluted (in shares)	26,266	26,638	27,506