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Commitments and Contingencies (Details) - USD ($)			3 Months Ended		9 Months Ended
	Nov. 01, 2022	Mar. 01, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Commitments and Contingencies [Abstract]
Lease incentive			$ 220,000		$ 220,000
Right-of-use asset	$ 124,000				$ 1,000,000
Percentage of lease assets and liabilities			8.00%		8.00%
Lease liability	$ 117,000	$ 274,000
Rent expense			$ 200,000	$ 200,000	$ 600,000	$ 600,000
Related expenditures			2,300,000		2,300,000
Non-cancelable purchase orders			$ 3,100,000		$ 3,100,000

X

- Definition

Amount of lease liability.

+ References

No definition available.

+ Details

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Namespace Prefix:	prso_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Rent expense.

+ References

No definition available.

+ Details

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Namespace Prefix:	prso_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

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X

- Definition

Amount of incentive granted by lessor to lessee.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 840
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481178/840-20-25-6

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 840
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481178/840-20-25-7

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 30
-Paragraph 5
-Subparagraph (a)
-SubTopic 10
-Topic 842
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479924/842-10-30-5

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Balance Type:	debit
Period Type:	instant

X

- Definition

Discount rate used by lessee to determine present value of operating lease payments.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

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Period Type:	instant

X

- Definition

Amount of periodic reduction over lease term of carrying amount of right-of-use asset from operating lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
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X

- Definition

States the combined aggregate amount of maturities and sinking fund requirements for a long-term unconditional purchase obligation that has been recognized on the balance sheet.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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-Paragraph 1
-SubTopic 10
-Topic 470
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481544/470-10-50-1

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X

- Definition

The value of assets other than financial instruments pledged to provide security to a suppler under a recorded unconditional purchase obligation arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481420/860-30-50-1A

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