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STOCKHOLDERS' EQUITY - Additional Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended
Jul. 24, 2023
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2023
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Apr. 27, 2022
Dec. 31, 2021
Apr. 26, 2021
Class Of Stock [Line Items]                    
Dividends declared per common share   $ 0.14 $ 0.12   $ 0.28 $ 0.22        
Preferred Stock Shares Authorized   50,000,000     50,000,000          
Preferred stock, par value   $ 1.00     $ 1.00          
Treasury Stock Shares Acquired         3,865,375 10,680,890        
Treasury Stock Shares   43,906,494 32,036,780   43,906,494 32,036,780 40,954,057   21,836,611  
Legal surplus reserve rate         10.00%          
Puerto Rico Banking Law Description         The Puerto Rico Banking Law provides that, when the expenditures of a Puerto Rico commercial bank are greater than receipts, the excess of the expenditures over receipts must be charged against the undistributed profits of the bank, and the balance, if any, must be charged against the legal surplus reserve, as a reduction thereof. If the legal surplus reserve is not sufficient to cover such balance in whole or in part, the outstanding amount must be charged against the capital account and the Bank cannot pay dividends until it can replenish the legal surplus reserve to an amount of at least 20% of the original capital contributed.          
Legal Surplus Amount Additions         $ 0          
Legal Surplus Amount   $ 168,484,000     $ 168,484,000   $ 168,484,000      
Stock Repurchase Program Authorized Amount 1               $ 350,000,000   $ 300,000,000
Preferred Stock Shares Outstanding   0     0          
Stock Issued During Period Shares Treasury Stock Reissued         970,429 491,085        
Shares Paid For Tax Withholding For Share Based Compensation         287,835 201,930        
Dividends paid on common stock   $ 25,300,000 $ 23,400,000   $ 50,700,000 $ 43,300,000        
Forecast [Member]                    
Class Of Stock [Line Items]                    
Common stock repurchase value       $ 150,000,000            
New Stock Repurchase Program [Member]                    
Class Of Stock [Line Items]                    
Treasury Stock Shares Acquired         3,577,540 7,069,263        
Common stock repurchased price per share         $ 13.98 $ 14.15        
Stock Repurchase Program Remaining Authorized Repurchase Amount 1   $ 75,000,000     $ 75,000,000          
Common stock repurchase value         $ 50,000,000 $ 100,000,000        
Previous Stock Repurchase Program [Member]                    
Class Of Stock [Line Items]                    
Treasury Stock Shares Acquired           3,409,697        
Common stock repurchased price per share           $ 14.66        
Common stock repurchase value           $ 50,000,000        
Subsequent Event [Member]                    
Class Of Stock [Line Items]                    
Dividend Payable Date To Be Paid Day Month And Year Sep. 08, 2023                  
Dividends Payable Date Of Record Day Month And Year Aug. 24, 2023                  
Dividends Payable Date Declared Day Month And Year Jul. 24, 2023                  
Subsequent Event [Member] | Common Stock Outstanding [Member]                    
Class Of Stock [Line Items]                    
Dividends declared per common share $ 0.14                  
Subsequent Event [Member] | Stock Repurchase Program Announced July 24, 2023 [Member]                    
Class Of Stock [Line Items]                    
Stock Repurchase Program Authorized Amount 1 $ 225,000,000