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OFG Bancorp (Holding Company Only) Financial Information (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Oriental Insurance [Member] |  |  |
Subsidiary Or Equity Method Investee [Line Items] |  |  |
Dividends And Interest Paid | $ 4,000,000 | $ 4,000,000 | $ 5,000,000
Oriental Financial Services [Member] |  |  |
Subsidiary Or Equity Method Investee [Line Items] |  |  |
Dividends And Interest Paid | $ 0 | $ 0 | $ 1,000,000

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