XML 69 R57.htm IDEA: XBRL DOCUMENT v3.10.0.1

Investment Securities (Investment securities by contractual maturity) (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Schedule of Investments [Line Items]
Available for sale Amortized Cost	$ 872,895,000	$ 648,800,000
Available-for-sale Securities	848,552,000	645,797,000
Held-to-maturity, Amortized cost	444,679,000	506,064,000
Held to maturity Fair Value	425,066,000	497,681,000
Maturities Due From One To Five Years [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	16,696,000
Available-for-sale Securities	16,352,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Maturities Due From Five To Ten Years [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	297,773,000
Available-for-sale Securities	288,214,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Maturities Due After Ten Years [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	557,780,000
Available-for-sale Securities	543,341,000
Held-to-maturity, Amortized cost	444,679,000
Held to maturity Fair Value	425,066,000
Collateralized Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	858,642,000	631,656,000
Available-for-sale Securities	834,538,000	629,124,000
Held-to-maturity, Amortized cost	444,679,000	506,064,000
Held to maturity Fair Value	425,066,000	497,681,000
Collateralized Mortgage Backed Securities [Member] | FNMA and FHLMC [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	586,097,000	383,194,000
Available-for-sale Securities	570,318,000	381,715,000
Held-to-maturity, Amortized cost	444,679,000	506,064,000
Held to maturity Fair Value	425,066,000	497,681,000
Collateralized Mortgage Backed Securities [Member] | GNMA [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	202,585,000	166,436,000
Available-for-sale Securities	197,454,000	167,338,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Collateralized Mortgage Backed Securities [Member] | CMO's [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	69,960,000	82,026,000
Available-for-sale Securities	66,766,000	80,071,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Collateralized Mortgage Backed Securities [Member] | Maturities Due From One To Five Years [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	4,241,000
Available-for-sale Securities	4,142,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Collateralized Mortgage Backed Securities [Member] | Maturities Due From One To Five Years [Member] | FNMA and FHLMC [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	4,241,000
Available-for-sale Securities	4,142,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Collateralized Mortgage Backed Securities [Member] | Maturities Due From Five To Ten Years [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	296,621,000
Available-for-sale Securities	287,055,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Collateralized Mortgage Backed Securities [Member] | Maturities Due From Five To Ten Years [Member] | FNMA and FHLMC [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	235,031,000
Available-for-sale Securities	228,438,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Collateralized Mortgage Backed Securities [Member] | Maturities Due From Five To Ten Years [Member] | CMO's [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	61,590,000
Available-for-sale Securities	58,617,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Collateralized Mortgage Backed Securities [Member] | Maturities Due After Ten Years [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	557,780,000
Available-for-sale Securities	543,341,000
Held-to-maturity, Amortized cost	444,679,000
Held to maturity Fair Value	425,066,000
Collateralized Mortgage Backed Securities [Member] | Maturities Due After Ten Years [Member] | FNMA and FHLMC [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	346,825,000
Available-for-sale Securities	337,738,000
Held-to-maturity, Amortized cost	444,679,000
Held to maturity Fair Value	425,066,000
Collateralized Mortgage Backed Securities [Member] | Maturities Due After Ten Years [Member] | GNMA [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	202,585,000
Available-for-sale Securities	197,454,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Collateralized Mortgage Backed Securities [Member] | Maturities Due After Ten Years [Member] | CMO's [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	8,370,000
Available-for-sale Securities	8,149,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Investment Securities
Schedule of Investments [Line Items]
Available for sale Amortized Cost	14,253,000	17,144,000
Available-for-sale Securities	14,014,000	16,673,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Investment Securities | US Treasury Securities [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	10,617,000	10,276,000
Available-for-sale Securities	10,460,000	10,163,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Investment Securities | Obligation of US Government sponsored agencies at loss [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	2,484,000	2,927,000
Available-for-sale Securities	2,395,000	2,879,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Investment Securities | Obligation of Puerto Rico Government and political subdivisions [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	0	2,455,000
Available-for-sale Securities	0	2,093,000
Investment Securities | Other Debt Securities [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	1,152,000	1,486,000
Available-for-sale Securities	1,159,000	$ 1,538,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Investment Securities | Maturities Due In Less Than One Year [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	646,000
Available-for-sale Securities	645,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Investment Securities | Maturities Due In Less Than One Year [Member] | US Treasury Securities [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	646,000
Available-for-sale Securities	645,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Investment Securities | Maturities Due In Less Than One Year [Member] | Obligation of Puerto Rico Government and political subdivisions [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	0
Available-for-sale Securities	0
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Investment Securities | Maturities Due From One To Five Years [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	12,455,000
Available-for-sale Securities	12,210,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Investment Securities | Maturities Due From One To Five Years [Member] | US Treasury Securities [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	9,971,000
Available-for-sale Securities	9,815,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Investment Securities | Maturities Due From One To Five Years [Member] | Obligation of US Government sponsored agencies at loss [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	2,484,000
Available-for-sale Securities	2,395,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Investment Securities | Maturities Due From Five To Ten Years [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	1,152,000
Available-for-sale Securities	1,159,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	0
Investment Securities | Maturities Due From Five To Ten Years [Member] | Other Debt Securities [Member]
Schedule of Investments [Line Items]
Available for sale Amortized Cost	1,152,000
Available-for-sale Securities	1,159,000
Held-to-maturity, Amortized cost	0
Held to maturity Fair Value	$ 0

X

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562

+ Details

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

X

- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.2)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

X

- Definition

Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

+ References

No definition available.

+ Details

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

X

- Definition

Fair value of investments in debt securities classified as held-to-maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

+ Details

Name:	us-gaap_HeldToMaturitySecuritiesFairValue
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

Name:	us-gaap_ScheduleOfInvestmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ofg_ContractualMaturityAxis=ofg_MaturitiesDueFromOneToFiveYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ofg_ContractualMaturityAxis=ofg_MaturitiesDueFromFiveToTenYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ofg_ContractualMaturityAxis=ofg_MaturitiesDueAfterTenYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentSecuritiesClassAxis=us-gaap_MortgageBackedSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=ofg_FnmaAndFhlmcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_GovernmentNationalMortgageAssociationCertificatesAndObligationsGNMAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_CollateralizedMortgageObligationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentSecuritiesClassAxis=us-gaap_SecuritiesInvestmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_OtherDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ofg_ContractualMaturityAxis=ofg_MaturitiesDueInLessThanOneYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: