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EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Jan. 31, 2015	Nov. 01, 2014	Aug. 02, 2014	May 03, 2014	Feb. 01, 2014	Nov. 02, 2013	Aug. 03, 2013	May 04, 2013	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Basic and diluted earnings per share [Abstract]
Net income, in thousands	$ 19,925us-gaap_NetIncomeLoss	$ 16,890us-gaap_NetIncomeLoss	$ 8,380us-gaap_NetIncomeLoss	$ 28,388us-gaap_NetIncomeLoss	$ 16,870us-gaap_NetIncomeLoss	$ 17,250us-gaap_NetIncomeLoss	$ 10,542us-gaap_NetIncomeLoss	$ 26,214us-gaap_NetIncomeLoss	$ 73,584us-gaap_NetIncomeLoss	$ 70,877us-gaap_NetIncomeLoss	$ 72,582us-gaap_NetIncomeLoss
Weighted average number of common shares outstanding (in shares)									25,369,000	25,870,000	26,132,000
Weighted average number of common shares outstanding and dilutive shares (in shares)									25,620,000	26,266,000	26,638,000
Basic earnings per share (in dollars per share)	$ 0.80us-gaap_EarningsPerShareBasic	$ 0.67us-gaap_EarningsPerShareBasic	$ 0.33us-gaap_EarningsPerShareBasic	$ 1.10us-gaap_EarningsPerShareBasic	$ 0.65us-gaap_EarningsPerShareBasic	$ 0.67us-gaap_EarningsPerShareBasic	$ 0.41us-gaap_EarningsPerShareBasic	$ 1.01us-gaap_EarningsPerShareBasic	$ 2.90us-gaap_EarningsPerShareBasic	$ 2.74us-gaap_EarningsPerShareBasic	$ 2.78us-gaap_EarningsPerShareBasic
Diluted earnings per share (in dollars per share)	$ 0.79us-gaap_EarningsPerShareDiluted	$ 0.67us-gaap_EarningsPerShareDiluted	$ 0.32us-gaap_EarningsPerShareDiluted	$ 1.09us-gaap_EarningsPerShareDiluted	$ 0.64us-gaap_EarningsPerShareDiluted	$ 0.66us-gaap_EarningsPerShareDiluted	$ 0.40us-gaap_EarningsPerShareDiluted	$ 1.00us-gaap_EarningsPerShareDiluted	$ 2.87us-gaap_EarningsPerShareDiluted	$ 2.70us-gaap_EarningsPerShareDiluted	$ 2.72us-gaap_EarningsPerShareDiluted
Stock Options [Member]
Basic and diluted earnings per share [Abstract]
Dilutive equity awards (in shares)									66,000	96,000	372,000
Antidilutive securities excluded from the computation of earnings per share (in shares)									677	0	0
Nonvested Stock Awards [Member]
Basic and diluted earnings per share [Abstract]
Dilutive equity awards (in shares)									185,000	300,000	134,000
Antidilutive securities excluded from the computation of earnings per share (in shares)									24,950
Incremental dilutive impact if performance criteria had been achieved (in shares)									17,316