The amount of line of credit pursued as additional collateral in reinsurance arrangement.

No definition available.

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

- Definition

The amount of reinsurance collateral received from a trust.

+ References

No definition available.

+ Details

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

- Definition

Maximum coverage per event.

+ References

No definition available.

+ Details

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

- Definition

Number of placements for reinsurance programs.

+ References

No definition available.

+ Details

Name:	prch_ReinsuranceProgramNumberOfPlacements
Namespace Prefix:	prch_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of reinsurance recoverable after offsetting deferred revenue and other liabilities.

+ References

No definition available.

+ Details

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

- Definition

Number of retention layers for reinsurance policy.

+ References

No definition available.

+ Details

Name:	prch_ReinsuranceRetentionPolicyNumberOfRetentionLayers
Namespace Prefix:	prch_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

he amount of supplemental reinsurance coverage.

+ References

No definition available.

+ Details

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

- Definition

Cash payments made for reinsurance during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (g)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-25

+ Details

Name:	us-gaap_PaymentsForReinsurance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of the write-down or write-off of a receivable from a reinsurer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

+ Details

Name:	us-gaap_ReinsuranceLossOnUncollectibleAccountsInPeriodAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of increase in allowance for credit loss on reinsurance recoverable, from recovery.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

+ Details

Name:	us-gaap_ReinsuranceRecoverableAllowanceForCreditLossRecovery
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount per event of risk undertaken originally by insurer that is not ceded to reinsurer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479838/944-20-50-3

+ Details

Name:	us-gaap_ReinsuranceRetentionAmountRetainedPerEvent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount per event of risk ceded to reinsurer in excess of risk undertaken originally by insurer that is not ceded to reinsurer.

+ References

+ Details

Name:	us-gaap_ReinsuranceRetentionExcessRetentionAmountReinsuredPerEvent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

+ Details

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

- Definition

Percentage of risk undertaken originally by insurer ceded to reinsurer.

+ References

+ Details

Name:	us-gaap_ReinsuranceRetentionPolicyReinsuredRiskPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_CededCreditRiskAxis=prch_VesttooMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=prch_HomeownersOfAmericaInsuranceCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=prch_ReinsuranceQuotaShareProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_TX
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_SC
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=prch_CoreLocationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=prch_CoreLocationsOutsideOfTexasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=prch_CombinedProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=prch_ReinsurancePropertyCatastropheTreatiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Reinsurance - Additional information (Details) $ in Thousands			1 Months Ended		3 Months Ended			6 Months Ended	9 Months Ended
	Jul. 01, 2023 USD ($)	Apr. 01, 2023 USD ($)	Aug. 31, 2023 USD ($)	Jul. 31, 2023 USD ($)	Sep. 30, 2023 USD ($) placement layer	Jun. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($) placement layer	Sep. 30, 2022 USD ($)
Reinsurance Retention [Line Items]
Loss on reinsurance contract							$ 0		$ 41,201	$ 0
Reinsurance recoverable improvement					$ (7,043)
Vesttoo \| Homeowners of America Insurance Company
Reinsurance Retention [Line Items]
Reinsurance, collateral received from trust	$ 47,600			$ 47,600
Reinsurance, collateral, line of credit facility	300,000
Loss on reinsurance contract						$ 48,200
Reinsurance, net asset due						$ 95,800
Supplemental reinsurance coverage	$ 166,000
Vesttoo \| Homeowners of America Insurance Company \| Forecast
Reinsurance Retention [Line Items]
Additional premium payments								$ 20,000
Maximum \| Vesttoo \| Homeowners of America Insurance Company
Reinsurance Retention [Line Items]
Reinsurance coverage limit					$ 175,000
Reinsurance Quota Share Program
Reinsurance Retention [Line Items]
Number of placements for reinsurance programs \| placement					3				3
Reinsurance Quota Share Program \| Texas
Reinsurance Retention [Line Items]
Reinsured risk percentage									42.00%
Reinsurance Quota Share Program \| South Carolina
Reinsurance Retention [Line Items]
Reinsured risk percentage									7.00%
Reinsurance Quota Share Program \| Core program
Reinsurance Retention [Line Items]
Reinsured risk percentage									9.50%
Reinsurance Quota Share Program \| Core locations outside of Texas
Reinsurance Retention [Line Items]
Reinsured risk percentage									8.00%
Reinsurance Quota Share Program \| Combined program
Reinsurance Retention [Line Items]
Reinsured risk percentage									5.00%
Reinsurance Property Catastrophe Treaties
Reinsurance Retention [Line Items]
Number of retention layers for reinsurance policy \| layer					4				4
Excess amount retained		$ 440,000
Reinsurance Property Catastrophe Treaties \| Minimum
Reinsurance Retention [Line Items]
Amount retained			$ 20,000
Reinsurance Property Catastrophe Treaties \| Maximum
Reinsurance Retention [Line Items]
Amount retained			$ 80,000