DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended	3 Months Ended		9 Months Ended
	May 31, 2009	Jan. 29, 2012	Jul. 31, 2011	Jul. 29, 2012	Jul. 31, 2011	Nov. 01, 2009	Jul. 29, 2012 Warrants on common stock [Member] Investment and other income (expense), net [Member]	Jul. 31, 2011 Warrants on common stock [Member] Investment and other income (expense), net [Member]	Jul. 29, 2012 Warrants on common stock [Member] Investment and other income (expense), net [Member]	Jul. 31, 2011 Warrants on common stock [Member] Investment and other income (expense), net [Member]	Jul. 29, 2012 Other liabilities [Member] Warrants on common stock [Member]	Oct. 30, 2011 Other liabilities [Member] Warrants on common stock [Member]
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES [Abstract]
Warrants issued (in shares)	2,100,000
Number of shares for each warrant exercisable (in shares)	1
Exercise price of warrants (in dollars per share)	$ 0.01
Percentage of warrants exercisable upon issuance (in hundredths)	40.00%
Incremental percentage of warrants exercisable thereafter (in hundredths)	20.00%
Warrants cancelled (in shares)						1,200,000
Warrants exercised (in shares)		200,000
Amount of Gain (Loss) Recognized related to Derivative Instruments		$ 100,000	$ 200,000		$ (600,000)		$ 0	$ 221,000	$ 94,000	$ (599,000)
Amount of cash flow hedge to be recognized in income				100,000
Derivatives, Fair Value [Line Items]
Fair Value of Derivatives Not Designated as Hedging Instruments Under ASC 815											0	1,147,000
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized related to Derivative Instruments		$ 100,000	$ 200,000		$ (600,000)		$ 0	$ 221,000	$ 94,000	$ (599,000)