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Retirement Savings Plan (Details)	12 Months Ended
	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%

X

- 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

X

- 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