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FEDERAL HOME LOAN BANK ADVANCES - FHLB ADVANCES (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
FHLB advances    
Total FHLB advances $ 465,000 $ 95,000
Additional collateralized advances available 639,000 900,000
Overnight advances    
FHLB advances    
Total FHLB advances 195,000 75,000
Fixed interest rate advances    
FHLB advances    
Total FHLB advances 270,000 20,000
Various other unsecured lines of credit    
FHLB advances    
Unsecured lines of credit $ 125,000 $ 125,000