Revenue - Warranty Revenue and Related Balance Sheet Disclosures (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Refundable customer deposits	$ 13,054	$ 17,911
Deferred revenue	4,404	3,887
Non-current deferred revenue (1)	$ 2,539	$ 2,856

The amount of noncurrent refundable customer deposits related to amounts received in advance of warranty services provided as at the end of the reporting period.

No definition available.

Name:	prch_RefundableCustomerDepositsRelatedToAmountsReceivedInAdvanceOfWarrantyServicesProvidedNoncurrent
Namespace Prefix:	prch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant