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REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Jan. 01, 2020
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]          
One-time charge associated with FDIC implementation of special assessment $ 7,400   $ 7,400    
FDIC deposit insurance $ 2,164 $ 2,143 7,582 $ 6,419  
Payment for one-time charge associated with FDIC implementation of special assessment     1,600    
Commercial And Financial Standby Letters Of Credit [Member]          
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]          
Commitments to extend credit     67,500    
Commitments To Extend Credit [Member]          
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]          
Commitments to extend credit     2,100,000    
Commitments To Extend Credit [Member] | Credit Card [Member]          
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]          
Commitments to extend credit     800,000    
FDIC Special Assessment [Member]          
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]          
FDIC deposit insurance     $ 1,100    
ASU 2016-13          
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]          
Percentage Of Increase In ACL Adjusted In Capital Measures 25.00%   25.00%   25.00%
CECL, amount excluded to be phased-on during after two years $ 16,200   $ 16,200    
ASU 2016-13 | Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member]          
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]          
Cumulative Effect Of New Accounting Principle In Period Of Adoption 1         $ (48,600)
Basel III [Member]          
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]          
Capital Conservation Buffer 2.50%   2.50%