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OPERATING LEASES (Details) (USD $)
12 Months Ended 3 Months Ended
Nov. 02, 2014
Nov. 03, 2013
Oct. 28, 2012
Apr. 29, 2012
OPERATING LEASES [Abstract]        
Rent expense under operating leases $ 2,800,000us-gaap_OperatingLeasesRentExpenseMinimumRentals $ 2,700,000us-gaap_OperatingLeasesRentExpenseMinimumRentals $ 2,700,000us-gaap_OperatingLeasesRentExpenseMinimumRentals  
Capital Leased Assets [Line Items]        
Reduction of operating lease commitments     15,000,000plab_ReductionOfOperatingLeaseCommitments  
Future minimum lease payments under non-cancelable operating leases [Abstract]        
2015 2,292,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent      
2016 2,063,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears      
2017 1,595,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears      
2018 569,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears      
2019 340,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears      
Thereafter 1,983,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter      
Total future minimum payments due 8,842,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue      
Capital Lease Obligations With Micron [Member]        
Capital Leased Assets [Line Items]        
Payment to purchase U.S. nonoFab facility       $ 35,000,000us-gaap_PaymentsToAcquireBuildings
/ us-gaap_LongtermDebtTypeAxis
= plab_TermsOfFormerLeaseAgreementWithMicronDomain