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v3.23.4

Retirement Savings Plan (Details) | 12 Months Ended
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Dec. 31, 2022
Retirement Savings Plan [Abstract] |
Minimum age for eligibility to participate in the savings plan | 21 years
Maximum contribution by the participants | 15.00%

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- Definition Represents the maximum contribution to a defined contribution plan as a percentage of eligible earnings of employees, subject to a statutorily prescribed annual limit. + References No definition available. + Details
Name: | prso_DefinedContributionPlanMaximumContributionsByPlanParticipantsPercentage
Namespace Prefix: | prso_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the minimum age limit for participating in the defined contribution plan covering full-time and part-time employees of the entity. + References No definition available. + Details
Name: | prso_DefinedContributionPlanRequiredAgeOfEmployeesToBeEligibleForParticipationInPlan
Namespace Prefix: | prso_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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