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LONG-TERM DEBT - Narrative (Detail)
Mar. 31, 2024
USD ($)
bank
Dec. 31, 2023
USD ($)
bank
Debt Disclosure [Abstract]    
Collateral for all outstanding loans $ 1,100,000,000  
Additional availability at the FHLB based on qualifying collateral 996,000,000  
Letters of credit 12,000,000  
Letters of credit non-deposit 609,000  
Available unsecured lines of credit $ 20,000,000 $ 20,000,000
Number of correspondent banks | bank 2 2
Borrowings under lines of credit $ 0 $ 0