Revenue - Contract Assets (Details) $ in Thousands	6 Months Ended
Jun. 30, 2024 USD ($)
Contract With Customer, Asset, After Allowance For Credit Loss, Current [Roll Forward]
Balance at December 31, 2023	$ 17,393
Estimated lifetime value of commissions on insurance policies sold by carriers	648
Cash receipts	(309)
Value of commissions sold with business disposition (Note 15)	(16,982)
Balance at June 30, 2024	$ 750

Contract With Customer, Asset, After Allowance For Credit Loss, Current

No definition available.

Name:	prch_ContractWithCustomerAssetAfterAllowanceForCreditLossCurrentRollForward
Namespace Prefix:	prch_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of decrease in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time from cash receipts.

+ References

No definition available.

+ Details

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

- Definition

Contract with Customer, Asset, Decrease, Commissions Sold With Business Acquisition

+ References

No definition available.

+ Details

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

- Definition

Amount of increase in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time from value of life insurance policies sold by carriers.

+ References

No definition available.

+ Details

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

- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-8

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant