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SECURITIES - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Debt and Equity Securities, FV-NI [Line Items] |  |  |
Transfer from securities held-to-maturity | $ 0 | $ 0 |
Securities available-for-sale transferred to held-to-maturity |  | 372,154,000 | $ 140,399,000
Unrealized loss on transfer of securities to held to maturity | (27,700,000) |  |
Gain (loss) on transfer of securities to held-to-maturity | $ 0 |  |
Transfer to securities held-to-maturity |  | $ 372,200,000 |
Transfers to or from securities held-to-maturity |  |  | 0
Financial Instrument, Owned, Pledged Status [Extensible Enumeration] | Securities pledged | Securities pledged |
Net loss on equity securities | $ 758,000 |  |
Number of holdings of securities of any one issuer in an amount greater than 10% of stockholders equity | 0 | 0 |
Threshold for disclosure percentage | 10.00% | 10.00% |
Available for sale debt securities, unrealized loss position due to credit | $ 0 |  |
Allowance for credit losses on available for sale debt securities | 0 |  |
Accrued interest receivable on securities | 5,300,000 | $ 5,400,000 |
Securities pledged |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |
Carrying amount of securities pledged | 457,700,000 | $ 631,400,000 |
Fair Value |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |
Securities available-for-sale transferred to held-to-maturity |  |  | $ 140,400,000
Other assets |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |
Equity securities | $ 2,200,000 |  |

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