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Warrant Liabilities | 6 Months Ended
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Jun. 30, 2026
Warrants and Rights Note Disclosure [Abstract] |
Warrant Liabilities | Warrant LiabilitiesDuring the three and six months ended June 30, 2026, there were no exercises of warrants. During the three and six months ended June 30, 2025, 200 and 275 warrants were exercised, respectively.

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- Definition Warrants [Text Block]. + References No definition available. + Details
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Namespace Prefix: | opfi_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_WarrantsAndRightsNoteDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration