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v3.22.2.2

Related Party Transactions - Additional Information (Details) - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2022 | Sep. 30, 2021
Consultant |  |
Related Party Transaction [Line Items] |  |
Compensation paid | $ 126,800 | $ 153,100
Employed Family Member |  |
Related Party Transaction [Line Items] |  |
Compensation paid | $ 127,500 | $ 69,000

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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_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of expense for salary and wage arising from service rendered by nonofficer and officer employees. Excludes allocated cost, labor-related nonsalary expense, and direct and overhead labor cost included in cost of good and service sold. + References No definition available. + Details
Name: | us-gaap_SalariesWagesAndOfficersCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | srt_TitleOfIndividualAxis=prso_ConsultantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_TitleOfIndividualAxis=prso_EmployedFamilyMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |