SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	9 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	Sep. 30, 2025
Accounting Policies [Abstract]
Nature of Operations and Basis of Presentation	Nature of Operations OFG is a publicly-owned financial holding company incorporated under the laws of the Commonwealth of Puerto Rico. OFG operates through various subsidiaries, including a commercial bank, Oriental Bank (the “Bank”), a securities broker-dealer and investment adviser, Oriental Financial Services LLC (“Oriental Financial Services”), an insurance agency, Oriental Insurance, LLC (“Oriental Insurance”), a captive reinsurance company, OFG Reinsurance Ltd (“OFG Reinsurance”), and OFG Ventures LLC (“OFG Ventures”), which holds equity investments. Through these subsidiaries and their respective divisions, OFG provides a wide range of banking and financial services such as commercial, consumer, auto, and mortgage lending, financial planning, insurance sales, investment advisory, and securities brokerage services, as well as corporate trust services. The Bank has a wholly-owned operating subsidiary, OFG USA LLC (“OFG USA”), which is a commercial lender organized in Delaware. In addition, Oriental International Bank Inc. (“OIB”), a wholly-owned subsidiary of the Bank, and Oriental Overseas, a division of the Bank, are international banking entities licensed pursuant to the International Banking Center Regulatory Act of Puerto Rico, as amended. OIB and Oriental Overseas offer the Bank certain Puerto Rico tax advantages. Their activities are limited under Puerto Rico law to assets/liabilities located outside of Puerto Rico. The Bank also has a wholly-owned subsidiary, OBPEF LLC (“OBPEF”), which is a private equity fund under the Puerto Rico Incentives Code, as amended, whose objective is to provide financing to eligible borrowers, whether in the form of senior or subordinated debt, to support the economic development of Puerto Rico. Basis of Presentation The accompanying unaudited consolidated financial statements of OFG have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and in accordance with guidance provided by the Securities and Exchange Commission (“SEC”). Accordingly, these consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. In the opinion of management, the accompanying unaudited consolidated financial statements reflect all adjustments considered necessary for a fair presentation of the financial position, results of operations and cash flows of OFG on a consolidated basis, and all such adjustments are of a normal recurring nature. The consolidated financial statements should be read in conjunction with the audited consolidated financial statements and footnotes thereto included in OFG’s annual report on Form 10-K for the fiscal year ended December 31, 2024 (the “2024 Form 10-K”). Operating results for the nine-month period ended September 30, 2025, are not necessarily indicative of the results that may be expected for the year ending December 31, 2025. OFG evaluated subsequent events through the filing date of this report with the SEC and has recorded or disclosed those material events or transactions as described within the accompanying consolidated financial statements and notes. Material estimates that are particularly susceptible to significant change in the near term relate mainly to the determination of the allowance for credit losses.
New Accounting Updates Not Yet Adopted	New Accounting Updates Not Yet Adopted Derivatives and Hedging (Topic 815) and Revenue from Contracts with Customers (Topic 606): Derivatives Scope Refinements and Scope Clarification for Share-Based Noncash Consideration from a Customer in a Revenue Contract. In September 2025, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2025-07, which refines the scope of the guidance on derivatives in ASC 815 and clarifies the guidance on share-based payments from a customer in ASC 606. The ASU is intended to address concerns about the application of derivative accounting to contracts that have features based on the operations or activities of one of the parties to the contract and to reduce diversity in the accounting for share-based payments in revenue contracts. ASU 2025-07 is effective for all entities for interim and annual reporting periods beginning after December 15, 2026, and may be applied either on a prospective or modified retrospective basis. Early adoption is permitted. At September 30, 2025, we do not have derivative instruments. If we enter into derivative instruments in the future, we will adopt this guidance. Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. In September 2025, the FASB issued ASU 2025-06, which amends the accounting and disclosure rules for internal use software costs under GAAP (specifically ASC 350-40). The ASU eliminates stage‑based guidance for internal‑use software development and introduces a principles‑based approach for capitalization. Under the new model, capitalization begins when management authorizes and commits funding for a project and it is probable the software will be completed and perform its intended function. The ASU also relocates website development guidance to Subtopic 350‑40 and requires enhanced disclosures about the nature of internal‑use software projects, amounts capitalized and expensed, amortization methods, and significant judgments. ASU 2025-06 is effective for all entities for annual reporting periods beginning after December 15, 2027, and interim reporting periods within those annual reporting periods. Early adoption is permitted. We will adopt this guidance when it becomes effective in the 2028 annual period. We are currently evaluating the impact on our financial statements and disclosures. Disaggregation of Income Statement Expenses. In November 2024, FASB issued ASU 2024-03, which requires disaggregated disclosure of income statement expenses for public business entities. The ASU does not change the expense line items an entity presents on the face of the income statement, rather, it requires disaggregation of certain expense line items into specified categories in disclosures within the footnotes to the financial statements. The amendments in ASU 2024-03 are effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. Early adoption is permitted. We will adopt this guidance when it becomes effective in the 2027 annual period on a prospective basis. We are currently evaluating the impact on our financial statements and disclosures. Income Taxes—Improvements to Income Tax Disclosures. In December 2023, the FASB issued ASU 2023-09 to enhance income tax disclosures and requests for more information about the tax risks and opportunities present in an entity’s worldwide operations. The ASU’s two primary enhancements will require further disaggregation for existing disclosures for the effective tax rate reconciliation and income taxes paid. More specifically, the amendments will require entities to disclose: a tabular effective tax rate reconciliation, broken out into specific categories with certain reconciling items above a 5% threshold further broken out by nature and jurisdiction; and income taxes paid (net of refunds received), broken out between federal, state and foreign, and net amounts paid to an individual jurisdiction that exceed 5% of the total. The amendments in this update are effective for annual periods beginning after December 15, 2024. Entities are permitted to early adopt these amendments. The amendments should be applied prospectively, but retrospective application is permitted. We will adopt this guidance when it becomes effective in the 2025 annual period and the impact on our financial statements and disclosures is not expected to be material. New Accounting Updates Adopted in the quarter ended September 30, 2025 Financial Instruments—Credit Losses (Topic 326): Measurement Of Credit Losses For Accounts Receivable And Contract Assets. In July 2025, the FASB issued ASU 2025-05 which amends ASC 326-20 to provide a practical expedient (for all entities) and an accounting policy election (for all entities, other than public business entities, that elect the practical expedient) related to the estimation of expected credit losses for current accounts receivable and current contract assets that arise from transactions accounted for under ASC 606. The ASU is designed to reduce the cost and complexity of applying Topic 326 (credit losses) to current accounts receivable and current contracts assets arising from transactions accounted for under Topic 606 (revenue from contracts with customers). ASU 2025-05 is effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods, with early adoption permitted. Entities should apply the new guidance prospectively. We adopted this guidance in the third quarter of 2025 on a prospective basis and the impact on our financial statements and disclosures was not material.