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v3.23.1

Related Party Transactions (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Related Party Transactions (Details) [Line Items] |  |
Payment amount | $ 162,000 | $ 208,000
Employed Family [Member] |  |
Related Party Transactions (Details) [Line Items] |  |
Payment amount | $ 101,000 | $ 94,000

X
- References No definition available. + Details
Name: | prso_RelatedPartyTransactionsDetailsLineItems
Namespace Prefix: | prso_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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

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