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OTHER LONG-TERM BORROWINGS - Components of Other Borrowings (Parenthetical) (Detail) - Junior Subordinated Debt [Member]
3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
SOFR [Member]    
Subordinated Borrowing [Line Items]    
Debt Instrument Basis Spread On Variable Rate 0.26161%  
Debt Instrument Description Of Variable Rate Basis 3-month CME Term SOFR  
SOFR [Member] | Statutory Trust One [Member]    
Subordinated Borrowing [Line Items]    
Debt Instrument Basis Spread On Variable Rate 2.75% 2.75%
SOFR [Member] | Statutory Trust Two [Member]    
Subordinated Borrowing [Line Items]    
Debt Instrument Basis Spread On Variable Rate 2.50% 2.50%
due June 17, 2034 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Statutory Trust One [Member]    
Subordinated Borrowing [Line Items]    
Long Term Debt Percentage Bearing Variable Interest Rate   8.39%
due June 17, 2034 [Member] | SOFR [Member] | Statutory Trust One [Member]    
Subordinated Borrowing [Line Items]    
Debt Instrument Basis Spread On Variable Rate 0.26161% 0.26161%
Debt Instrument Description Of Variable Rate Basis 3-month CME Term SOFR 3-month CME Term SOFR
Long Term Debt Percentage Bearing Variable Interest Rate 8.34%  
due September 20, 2034 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Statutory Trust Two [Member]    
Subordinated Borrowing [Line Items]    
Long Term Debt Percentage Bearing Variable Interest Rate   8.13%
due September 20, 2034 [Member] | SOFR [Member] | Statutory Trust Two [Member]    
Subordinated Borrowing [Line Items]    
Debt Instrument Basis Spread On Variable Rate 0.26161% 0.26161%
Debt Instrument Description Of Variable Rate Basis 3-month CME Term SOFR 3-month CME Term SOFR
Long Term Debt Percentage Bearing Variable Interest Rate 8.09%