Borrowings (Redemption Fund) (Details) (Redemption Fund [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Redemption Fund [Member]
Debt Instrument [Line Items]
Redemption fund - September 30, 2014	$ 55,275
2015	6,700
2016	5,025
Total	$ 67,000

Cumulative amount paid into a fund, which is used to retire the debt instrument.

No definition available.

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Period Type:	instant

- Definition

Cumulative amounts of future obligation, which will be used to retire the debt instrument.

+ References

No definition available.

+ Details

Name:	ofg_DebtInstrumentCumulativeSinkingFundObligations
Namespace Prefix:	ofg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

+ References

+ Details

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