Amount of debt final payment fees.

No definition available.

Name:	prch_DebtInstrumentFinalPaymentFees
Namespace Prefix:	prch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Final payment fee percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	prch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Financial covenants requiring minimum cash level.

+ References

No definition available.

+ Details

Name:	prch_DebtInstrumentFinancialCovenantsMinimumCashLevel
Namespace Prefix:	prch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financial covenants requiring minimum revenue.

+ References

No definition available.

+ Details

Name:	prch_DebtInstrumentFinancialCovenantsMinimumRevenue
Namespace Prefix:	prch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Financial covenants requiring projected revenue percentage for future quarters.

+ References

No definition available.

+ Details

Name:	prch_DebtInstrumentFinancialCovenantsPercentageOfProjectedRevenue
Namespace Prefix:	prch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Loan default interest rate percentage.

+ References

No definition available.

+ Details

Name:	prch_DebtInstrumentLoanDefaultInterestRatePercentage
Namespace Prefix:	prch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Repayment fees percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	prch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of paid in kind interest rate.

+ References

No definition available.

+ Details

Name:	prch_PaidInKindInterestRate
Namespace Prefix:	prch_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870

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-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=prch_LoanAndSecurityAgreementRunwayLoanMember
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Balance Type:
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- Details

Name:	srt_StatementScenarioAxis=prch_LoansRepaidPriorToFirstAnniversaryMember
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- Details

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Namespace Prefix:
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Balance Type:
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- Details

Name:	srt_StatementScenarioAxis=prch_LoansRepaidPriorToThirdAnniversaryMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=prch_LoansRepaidPriorToFourthAnniversaryMember
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Data Type:	na
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- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
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Debt - Runway Growth Credit Fund (Details) - Loan and Security Agreement , Runway Loan [Member] $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2021 USD ($)	Dec. 31, 2020	Jun. 30, 2021
Debt Instrument [Line Items]
Basis spread on interest rate	8.00%	8.50%
Paid in kind interest rate	2
Calculated interest rate		11.05%	8.55%
Loan default	5.00%
Debt Instrument, Final Payment Fees	$ 1,750
Aggregate amount	$ 10,000
Final payment fee	3.50%
Financial covenants, Minimum cash level	$ 3,000
Financial covenants, Minimum revenue	$ 15,400
Financial covenants, projected revenue percentage	70.00%
Loans Repaid Prior To First Anniversary [Member]
Debt Instrument [Line Items]
Repayment fees percentage	2.00%
Loans Repaid Prior to Second Anniversary [Member]
Debt Instrument [Line Items]
Repayment fees percentage	1.50%
Loans Repaid Prior to Third Anniversary [Member]
Debt Instrument [Line Items]
Repayment fees percentage	1.00%
Loans Repaid Prior to Fourth Anniversary [Member]
Debt Instrument [Line Items]
Repayment fees percentage	0.50%
Three-month LIBOR
Debt Instrument [Line Items]
Variable interest rate	0.55%