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OPERATING LEASES (Details) (USD $)
12 Months Ended 3 Months Ended
Oct. 28, 2012
Oct. 30, 2011
Oct. 31, 2010
Apr. 29, 2012
Capital Lease Obligations With Micron [Member]
OPERATING LEASES [Abstract]        
Rent expense under operating leases $ 2,700,000 $ 2,900,000 $ 2,900,000  
Capital Leased Assets [Line Items]        
Payment to purchase U.S. nonoFab facility       35,000,000
Reduction of operating lease commitments 15,000,000      
Future minimum lease payments under non-cancelable operating leases [Abstract]        
2013 1,513,000      
2014 793,000      
2015 596,000      
2016 508,000      
2017 336,000      
Thereafter 556,000      
Total future minimum payments due $ 4,302,000