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Guarantees (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Guarantee Obligations [Line Items]
Representation and warranty arrangements	$ 1,400,000	$ 143,000	$ 281,000
Loss On GNMA Repurchased Loan Not Subject To Credit Recourse	2,500,000
Funds Advanced To Investors Under Servicing Agreements	301,000	391,000
Serviced mortgage loans for third parties	664,600,000
Loan with recourse [Member]
Guarantee Obligations [Line Items]
Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding	22,400,000	67,800,000
Repurchased GNMA	4,100,000
Representation and warranty arrangements	$ 22,100,000	$ 10,700,000

X

- Definition

Amount of serviced loans for third parties.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

This balances represents the total of funds advanced to investors under servicing agreements. As stated in the note, under these servicing agreements, the Company is required to advance to investors the payment of principal, interest, taxes and insurance, if such payments have not been received from the borrowers.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Gains (Losses) from repurchase of residential loans sold, not subject to credit recourse

+ References

No definition available.

+ Details

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Namespace Prefix:	ofg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Losses from repurchase of residential loans sold, subject to credit recourse

+ References

No definition available.

+ Details

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Namespace Prefix:	ofg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Unpaid principal amount of loans repurchased under representation and warranty arrangements.

+ References

No definition available.

+ Details

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Namespace Prefix:	ofg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Principal amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107314-111719

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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