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CONSOLIDATION, RESTRUCTURING AND RELATED CHARGES (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 27, 2013 | Jan. 29, 2012 | Oct. 28, 2012
Activities related to restructuring reserve [Abstract] |  |  |
Restructuring reserve beginning balance | $ 295 | $ 0 | $ 0
Charges | 0 | 1,118 | 1,400
Utilized | (255) | (699) |
Restructuring reserve ending balance | 40 | 419 | 295
Employee Terminations and Other [Member] |  |  |
Activities related to restructuring reserve [Abstract] |  |  |
Restructuring reserve beginning balance | 295 | 0 | 0
Charges | 0 | 886 |
Utilized | (255) | (467) |
Restructuring reserve ending balance | 40 | 419 |
Asset Write-downs [Member] |  |  |
Activities related to restructuring reserve [Abstract] |  |  |
Restructuring reserve beginning balance | 0 | 0 | 0
Charges | 0 | 232 |
Utilized | 0 | (232) |
Restructuring reserve ending balance | $ 0 | $ 0 |

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- Definition This line item represents the amount of the restructuring reserve that has been settled with, or without, cash during the period. + References No definition available. + Details
Name: | plab_RestructuringReserveUtilized
Namespace Prefix: | plab_
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Balance Type: | debit
Period Type: | duration

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- Definition Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140864-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 95-3 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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Balance Type: | credit
Period Type: | instant

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- Details
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