Reinsurance Contract, Term

No definition available.

Name:	prch_ReinsuranceContractTerm
Namespace Prefix:	prch_
Data Type:	xbrli:durationItemType
Balance Type:	na
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:	srt_ProductOrServiceAxis=prch_ReinsurancePropertyCatastropheTreatiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidatedEntitiesAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

Reinsurance for the Reciprocal - Narrative (Details) - USD ($) $ in Millions			1 Months Ended	12 Months Ended
	Apr. 01, 2026	Apr. 01, 2025	Jul. 31, 2026	Mar. 31, 2026
Reinsurance Property Catastrophe Treaties
Reinsurance Retention [Line Items]
Excess amount retained	$ 365.0			$ 410.0
Reinsurance Property Catastrophe Treaties \| Variable Interest Entity, Primary Beneficiary \| Subsequent Event
Reinsurance Retention [Line Items]
Amount retained			$ 100.0
Excess amount retained			$ 365.0
Reinsurance Property Catastrophe Treaties \| Minimum
Reinsurance Retention [Line Items]
Amount retained	$ 35.0			$ 25.0
Reinsurance Property Catastrophe Treaties \| Maximum
Reinsurance Retention [Line Items]
Amount retained		$ 23.1
Reinsurance Quota Share Program
Reinsurance Retention [Line Items]
Reinsured risk percentage		7.50%
Non-Catastrophic Weather Quota Share
Reinsurance Retention [Line Items]
Reinsurance contract, term		10 years