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Supplemental Information- Narrative (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Digital Assets |  |
Product Information [Line Items] |  |
Aggregate cost basis of digital currency holdings | $ 8,817 | $ 37,737

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- Definition Indefinite-Lived Intangible Assets, Cost Basis + References No definition available. + Details
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Namespace Prefix: | phun_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ProductInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=phun_DigitalAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |