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LONG TERM DEBT - Additional Information (Detail) (USD $)
 9 Months Ended 0 Months Ended 0 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Senior Notes
Dec. 07, 2012
Senior Notes
7.50% Senior Notes Due April 15, 2020
Apr. 23, 2012
Senior Notes
7.50% Senior Notes Due April 15, 2020
Dec. 06, 2012
Senior Notes
7.50% Senior Notes Due April 15, 2020
Apr. 23, 2012
Senior Notes
7.50% Senior Notes Due April 15, 2020
May 21, 2014
Junior Subordinated Debt
7.50% Amortizing Note Due May 15, 2017
May 21, 2014
Junior Subordinated Debt
7.50% Amortizing Note Due May 15, 2017
May 21, 2014
Junior Subordinated Debt
7.50% Amortizing Note Due May 15, 2017
Popular Community Bank
Branch
Debt Instrument [Line Items]                    
Aggregate principal amount issued           $ 45,000,000.0 $ 33,000,000.0      
Stated interest rate             7.50%   7.50%  
Sale price of notes to public           25.00 25.00      
Net proceeds from issuance of debt after discounts       50,100,000 31,700,000          
Exercise of underwriters' overallotment option       6,800,000            
Minimum redemption period notice required     30 days              
Maximum redemption period notice required     60 days              
Redemption price, percentage     100.00%              
Gross proceeds from issuance of tangible equity units               69,000,000    
Tangible equity units dividend rate               8.00%    
Tangible equity units issued during period, shares               1,380,000    
Tangible equity units issued to underwriter during period, shares               180,000    
Tangible equity units, price per share                 $ 50.00  
Tangible equity units, convertible, conversion ratio               10.604556    
Fair value of debt instrument                 14,634,000  
Adjustments to additional paid in capital, issuance of tangible equity units               54,366,000    
Tangible equity units issued, issuance costs               4,041,000    
Tangible equity units issued, issuance costs, underwriter discount               3,278,000    
Debt instrument, deferred finance cost               857,000    
Adjustments to additional paid in capital, tangible equity units issued, issuance costs               3,184,000    
Proceeds from issuance of tangible equity units, net of issuance costs $ 64,959,000 $ 0           $ 64,959,000    
Number of branches pending for acquisition                   20