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v3.24.3

Commitments and Contingencies (Details) | 9 Months Ended
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Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract] |
Contractual arrangements cancellation period | 30 days

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- Definition Contractual arrangements cancellation period. + References No definition available. + Details
Name: | plrx_ContractualArrangementsCancellationPeriod
Namespace Prefix: | plrx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration