Committed balance outstanding for cross default provision for any agreement or instrument.

No definition available.

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Namespace Prefix:	plab_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
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-SubTopic 470
-Section 50
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-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
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-Publisher FASB
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-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Discount rate used by lessee to determine present value of finance lease payments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeFinanceLeaseDiscountRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=plab_Three55MillionFinanceLeaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=plab_MonthlyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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LEASES, Finance Leases (Details) - USD ($) $ in Thousands	1 Months Ended
LEASES, Finance Leases (Details) - USD ($) $ in Thousands	Feb. 28, 2021	Jan. 31, 2021	Oct. 31, 2021	Oct. 31, 2020
Finance Leases [Abstract]
Finance lease amount			$ 38,372	$ 0
$7.2 Million Finance Lease [Member]
Finance Leases [Abstract]
Finance lease contract term			5 years
Finance lease amount	$ 7,200
Early buyout option to purchase tool	$ 2,400
Finance lease interest implicit rate	1.08%
$35.5 Million Finance Lease [Member]
Finance Leases [Abstract]
Finance lease contract term			5 years
Finance lease amount		$ 35,500
Early buyout option to purchase tool		$ 14,100
Finance lease interest implicit rate		1.58%
$35.5 Million Finance Lease [Member] \| Minimum [Member]
Finance Leases [Abstract]
Outstanding committed balance for cross default provision		$ 5,000
Monthly [Member] \| $7.2 Million Finance Lease [Member]
Finance Leases [Abstract]
Finance lease monthly payments	$ 100
First Three Months [Member] \| $35.5 Million Finance Lease [Member]
Finance Leases [Abstract]
Finance lease monthly payments		40
Following Nine Months [Member] \| $35.5 Million Finance Lease [Member]
Finance Leases [Abstract]
Finance lease monthly payments		600
Forty Eight Months [Member] \| $35.5 Million Finance Lease [Member]
Finance Leases [Abstract]
Finance lease monthly payments		$ 500