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DEBT, Xiamen Project Loans (Details) - Xiamen Project Loans [Member] ¥ in Millions, $ in Millions	Oct. 31, 2021 CNY (¥)	Oct. 31, 2021 USD ($)	Nov. 30, 2018 CNY (¥)
Project Loans [Abstract]
Maximum borrowing capacity			¥ 345.0
Amount outstanding	¥ 255.0	$ 39.9

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- References

No definition available.

+ Details

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Namespace Prefix:	plab_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

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

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Balance Type:	credit
Period Type:	instant

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- Details

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