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BORROWINGS AND RELATED INTEREST (OFG’s Repurchase Agreements, Excluding Accrued Interest) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Debt Instrument [Line Items]    
Securities sold under agreements to repurchase $ 75,222 $ 0
FNMA and FHLMC Certificates    
Debt Instrument [Line Items]    
Amortized Cost of Underlying Securities 81,409  
Securities sold under agreements to repurchase 75,000  
Approximate Fair Value of Underlying Securities $ 80,968  
Weighted Average Interest Rate of Security 5.25%  
Securities Sold under Agreements to Repurchase    
Debt Instrument [Line Items]    
Accrued interest payable $ 222  
Securities sold under agreements to repurchase   $ 0
Securities Sold under Agreements to Repurchase | Under 90 days    
Debt Instrument [Line Items]    
Securities sold under agreements to repurchase 75,000  
Securities Sold under Agreements to Repurchase | Short-term Fixed-rate Repurchase Agreements    
Debt Instrument [Line Items]    
Securities sold under agreements to repurchase $ 75,000  
Weighted Average Interest Rate of Security 4.63%