INVESTMENT SECURITIES  - Schedule of Held To Maturity Credit Quality Indicator (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized Cost	$ 1,058,565	$ 1,111,629
FNMA MBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized Cost	872,653	909,498
FNMA MBS | A+ rated or higher
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
FNMA MBS | Not rated
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized Cost	872,653	909,498
State and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized Cost	185,912	201,631
State and political subdivisions | A+ rated or higher
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized Cost	185,912	201,631
State and political subdivisions | Not rated
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized Cost	$ 0	0
Foreign bonds
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized Cost		500
Foreign bonds | A+ rated or higher
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized Cost		500
Foreign bonds | Not rated
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized Cost		$ 0