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BORROWINGS AND RELATED INTEREST (OFG’s Repurchase Agreements, Excluding Accrued Interest) (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Debt Instrument [Line Items] |  |
Securities sold under agreements to repurchase | $ 27,463 | $ 75,222
FNMA and FHLMC Certificates |  |
Debt Instrument [Line Items] |  |
Amortized Cost of Underlying Securities | 28,726 | 81,409
Securities sold under agreements to repurchase | 27,344 | 75,000
Approximate Fair Value of Underlying Securities | $ 28,946 | $ 80,968
Weighted Average Interest Rate of Security | 5.50% | 5.25%
Securities Sold under Agreements to Repurchase |  |
Debt Instrument [Line Items] |  |
Accrued interest payable | $ 119 | $ 222
Securities Sold under Agreements to Repurchase | Under 90 days |  |
Debt Instrument [Line Items] |  |
Securities sold under agreements to repurchase | 27,344 | 75,000
Securities Sold under Agreements to Repurchase | Short-term Fixed-rate Repurchase Agreements |  |
Debt Instrument [Line Items] |  |
Securities sold under agreements to repurchase | $ 27,344 | $ 75,000
Weighted Average Interest Rate of Security | 4.50% | 4.63%

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