Commitments, Contingencies and Related Party Transactions - (Detail)	Jul. 20, 2021
Commitments and Contingencies Disclosure [Abstract]
Tax receivable agreement, percentage of members payment	90.00%

Tax Receivable Agreement, Percentage Of Members Payment

No definition available.

Name:	opfi_TaxReceivableAgreementPercentageOfMembersPayment
Namespace Prefix:	opfi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration