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

Represents the amount of outstanding principal and unpaid interest amount upon maturity payable percentage.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Debt repayment term.

+ References

No definition available.

+ Details

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Namespace Prefix:	prch_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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Namespace Prefix:	us-gaap_
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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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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

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Period Type:

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Balance Type:
Period Type:

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Debt - 2020 Convertible Promissory Notes (Details) - USD ($) $ in Thousands			1 Months Ended	12 Months Ended
	Dec. 23, 2020	Dec. 23, 2019	Jul. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020	Dec. 19, 2019
Debt
Amount borrowed								$ 3,000
Interest rate (stated)								3.00%
Original debt amount					$ 1,436	$ 34,105
2019 Convertible Promissory Notes
Debt
Amount borrowed						$ 21,600
Interest rate (stated)						10.00%
PIK Interest
Debt
Interest rate (stated)				10.00%
FVO notes
Debt
Amount borrowed				$ 5,500			$ 3,000
Fair value				$ 0
Percentage of outstanding principal and unpaid interest amount payment upon maturity				200.00%
Unpaid interest	$ 6,000
Debt repayment term			1 year
Series C Redeemable Convertible Preferred Stock
Debt
Fair value				$ 4,200
Unpaid interest	$ 1,000
Series C Redeemable Convertible Preferred Stock \| PIK Interest
Debt
Original debt amount		$ 1,000
Series C Redeemable Convertible Preferred Stock \| 2020 Convertible Promissory Notes
Debt
Original debt amount		$ 16,100