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LONG-TERM DEBT - Narrative (Details)
Jun. 30, 2024
USD ($)
bank
Dec. 31, 2023
USD ($)
bank
Debt Disclosure [Abstract]    
Collateral for all outstanding loans $ 1,100,000,000 $ 1,100,000,000
Additional availability at the FHLB based on qualifying collateral 1,000,000,000.0 973,300,000
Letters of credit 1,000,000.0 0
Letters of credit non-deposit $ 609,000 $ 609,000
Number of correspondent banks | bank 2 2
Available unsecured lines of credit $ 20,000,000.0 $ 20,000,000.0
Borrowings under lines of credit $ 0 $ 0