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COMMITMENTS AND CONTINGENCIES (Summarized Credit-Related Financial Instruments) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Commitments and Contingencies Disclosure [Abstract] |  |
Commitments to extend credit | $ 1,369,459 | $ 1,365,273
Commercial letters of credit | 2,599 | 48,196
Standby letters of credit and financial guarantees | 25,670 | 25,203
Recourse |  |
Other Commitments [Line Items] |  |
Loans sold with recourse | $ 113,444 | $ 121,778

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- Definition Amount of the contingent obligation under letters of credit. + References No definition available. + Details
Name: | ofg_CommercialLettersCredit
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition An irrevocable undertaking (typically by a financial institution) to guarantee payment of a specified financial obligation. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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- Definition Principal amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719 + Details
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Balance Type: | debit
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- 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
Name: | us-gaap_OtherCommitmentsLineItems
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- Definition Unused amount of commitments to extend credit to customers. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Data Type: | na
Balance Type: |
Period Type: |