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040420 - Disclosure - INTEREST AND DIVIDEND ON INVESTMENTS- Components of interest and dividend income on investments (Detail)
(http://www.firstbankpr.com/role/DisclosureINTERESTANDDIVIDENDONINVESTMENTSComponentsOfInterestAndDividendIncomeOnInvestmentsDetail)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001057706 (http://www.sec.gov/CIK)
Interest and Dividend on Investments [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Interest and Dividend on Investments [Abstract]
 
 
 
Components of interest and dividend income on investments [Abstract]
 
 
 
Interest income on investment securities and money market investments
52,816,000  
55,923,000  
61,095,000  
Dividends on FHLB stock
1,454,000  
1,075,000  
1,169,000  
Interest income excluding unrealized (loss) gain on derivatives (economic hedges)
   
Unrealized Gain Loss On Derivatives
   
Total interest and dividends on investments
54,270,000  
 
56,998,000  
 
62,264,000