Amount of receivable agreed to be sold per agreement.

No definition available.

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

- Definition

Represents number of annual installments for debt repayment.

+ References

No definition available.

+ Details

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

- Definition

Percentage of receivable agreed to be sold per agreement.

+ References

No definition available.

+ Details

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

- Definition

The cash outflow to repay the interest amount of long-term debt.

+ References

No definition available.

+ Details

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

- Definition

The cash outflow to repay the principal amount of long-term debt.

+ References

No definition available.

+ Details

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

- Definition

Amount of the total principal payments made during the annual reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
-Paragraph 1
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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Period Type:	instant

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Debt - Future receivables agreement (Details) $ in Thousands			3 Months Ended
	Dec. 31, 2020 USD ($)	Feb. 11, 2020 USD ($)	Mar. 31, 2021 USD ($)	Dec. 02, 2020	Nov. 02, 2020 USD ($) installment	Dec. 31, 2019 USD ($)	Dec. 19, 2019 USD ($)
Debt Instrument [Line Items]
Amount borrowed							$ 3,000
Promissory note carrying amount	$ 47,983		$ 50,104			$ 49,461
Interest rate (stated)							3.00%
Future Receivables Agreement [Member]
Debt Instrument [Line Items]
Amount borrowed		$ 2,000
Percentage of receivable agreed to be sold		10.00%
Promissory note		$ 2,000
Repayments Of Debt, Interest Amount		700
Promissory note carrying amount	0
Moving Services Company [Member]
Debt Instrument [Line Items]
Promissory note	150		150
Promissory note carrying amount	$ 617		$ 483
Interest rate (stated)				0.38%
Promissory note initial principal balance					$ 750
Promissory note, number of installments \| installment					5
Minimum \| Future Receivables Agreement [Member]
Debt Instrument [Line Items]
Accounts Receivable Agreed To Be Sold		2,300
Maximum \| Future Receivables Agreement [Member]
Debt Instrument [Line Items]
Accounts Receivable Agreed To Be Sold		$ 2,700