XML 120 R108.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Equity, Class of Treasury Stock [Line Items] |  |
Stock Repurchase Program Remaining Authorized Repurchase Amount1 | $ 7.7 |
Stock repurchase program remaining number of shares authorized to be repurchased | 478,691 |
SharePrice | $ 16.15 |
legal surplus | $ 87.6 | $ 81.5
Preferred Stock [Member] |  |
Equity, Class of Treasury Stock [Line Items] |  |
Preferred Stock Issue Costs | 13.6 | 13.6
Common Stock [Member] |  |
Equity, Class of Treasury Stock [Line Items] |  |
Common Stock Issuance Cost | $ 10.1 | $ 10.1

X
- Definition Amount of common stock issue costs charge against addional paid-in capital. + References No definition available. + Details
Name: | ofg_IssuanceCostsStock
Namespace Prefix: | ofg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount that is appropriated out of surplus earned for future or unforeseen expenditure. + References No definition available. + Details
Name: | ofg_LegalSurplus
Namespace Prefix: | ofg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of preferred stock issue costs charge against addional paid-in capital during the period. + References No definition available. + Details
Name: | ofg_PreferredStockIssueCostsPeriod
Namespace Prefix: | ofg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_EquityClassOfTreasuryStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ofg_ScheduleofstockbyclasstableAxis=us-gaap_PreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ofg_ScheduleofstockbyclasstableAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |