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Commitments and Contingencies - Summary of Other Information Related to Leases (Details) - USD ($) $ in Thousands | 6 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022
Leases [Abstract] |  |
Net cash paid (received) for amounts included in the measurement of lease liabilities | $ 1,382 | $ (750)
Leased assets obtained in exchange for new or modified operating lease liabilities | $ 10 |

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- Definition Net cash paid (received) for amounts included in the measurement of lease liabilities. + References No definition available. + Details
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Namespace Prefix: | pmvp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
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