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TREASURY STOCK (Details) (USD $)
In Millions, except Share data, unless otherwise specified
1 Months Ended 12 Months Ended
Dec. 31, 2004
Jul. 28, 2012
Jul. 31, 2010
Jul. 29, 2006
TREASURY STOCK.        
Value of common stock authorized for repurchase $ 50      
Number of shares repurchased       228,800
Aggregate cost of common stock repurchased       $ 6.1
Treasury shares issued related to stock options and vesting of restricted stock units and awards under its equity incentive plans   26,986 201,814