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COMMITMENTS (Details)	Aug. 29, 2022
Chiesi Agreements
Commitments And Contingencies [Line Items]
Extended term of agreement	7 years

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- Definition

Commitments And Contingencies [Line Items]

+ References

No definition available.

+ Details

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

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- Definition

Extended term of agreement.

+ References

No definition available.

+ Details

Name:	plx_ExtendedTermOfAgreement
Namespace Prefix:	plx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	us-gaap_TypeOfArrangementAxis=plx_ChiesiAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: