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Related Party Transactions - Additional Information (Details) - USD ($)	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Consultant
Related Party Transaction [Line Items]
Compensation paid	$ 92,400	$ 103,300
Employed Family Member
Related Party Transaction [Line Items]
Compensation paid	$ 92,400	$ 46,000

X

- 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

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_ConsultantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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