STOCKHOLDERS' EQUITY (Details) (USD $)	1 Months Ended	3 Months Ended			1 Months Ended		3 Months Ended		1 Months Ended	3 Months Ended		1 Months Ended	3 Months Ended
	May 31, 2012	Apr. 28, 2012	Apr. 30, 2011	Jan. 28, 2012	May 31, 2012 2010 Share Repurchase Program [Member]	Mar. 31, 2011 2010 Share Repurchase Program [Member]	Apr. 28, 2012 2010 Share Repurchase Program [Member]	Apr. 30, 2011 2010 Share Repurchase Program [Member]	May 31, 2012 2011 Share Repurchase Program [Member]	Apr. 28, 2012 2011 Share Repurchase Program [Member]	Apr. 30, 2011 2011 Share Repurchase Program [Member]	May 31, 2012 2012 Share Repurchase Program [Member]	Apr. 28, 2012 2012 Share Repurchase Program [Member]	Apr. 30, 2011 2012 Share Repurchase Program [Member]	Apr. 28, 2012 Retained Earnings [Member]	Apr. 30, 2011 Retained Earnings [Member]
STOCKHOLDERS' EQUITY
Stock Repurchased and Retired During Period, Shares					0		0	213,200	0	377,200	159,200	200	0	0
Stock Repurchased and Retired During Period, Value					$ 0		$ 0	$ 10,147,700	$ 0	$ 19,245,500	$ 8,345,600	$ 7,400	$ 0	$ 0	$ 16,000,000	$ 16,100,000
Amount authorized						100,000,000				100,000,000			50,000,000
Number of shares exchanged in payment of withholding taxes (in shares)	0	200	18,000
Share-based compensation withholding tax payments	0	12,300	814,600
Treasury Stock, Shares, Acquired		9,300	9,500
Treasury Stock, Value, Acquired, Cost Method		463,300	401,400
Treasury Stock, Shares	0	23,000	9,000	14,000
Treasury Stock, Value	$ 0	$ 1,062,000	$ 401,000	$ 598,000