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FAIR VALUES OF FINANCIAL INSTRUMENTS - Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements Other Than Goodwill (Details) - Significant Unobservable Inputs (Level 3) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Discounted cash flow | State and municipal securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 3,275 | $ 3,404
Discounted cash flow | State and municipal securities | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Maturity Call Date | 1 month | 1 month
US Muni BQ curve |  | A-
Discounted cash flow | State and municipal securities | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Maturity Call Date | 15 years | 15 years
US Muni BQ curve | BBB | BBB-
Discounted cash flow | State and municipal securities | Discount rate | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Discount rate | 0.036 | 0.004
Discounted cash flow | State and municipal securities | Discount rate | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Discount rate | 0.047 | 0.04
Discounted cash flow | State and municipal securities | Weighted-average coupon | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Discount rate | 0.033 | 0.034
Discounted cash flow | Corporate obligations and U.S. Government-sponsored mortgage backed securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 35 | $ 35
Discounted cash flow | Corporate obligations and U.S. Government-sponsored mortgage backed securities | Risk free rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Discount rate | 0.0026 |
Discounted cash flow | Corporate obligations and U.S. Government-sponsored mortgage backed securities | Premium for illiquidity |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Discount rate | 0.02 | 0.02
Discounted cash flow | Corporate obligations and U.S. Government-sponsored mortgage backed securities | Weighted-average coupon | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Discount rate | 0 | 0
Collateral based measurements | Collateral dependent loans |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 55,020 | $ 55,290
Collateral based measurements | Collateral dependent loans | Collateral based measurements | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Discount to reflect current market conditions and ultimate collectability | 0 | 0
Collateral based measurements | Collateral dependent loans | Collateral based measurements | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Discount to reflect current market conditions and ultimate collectability | 0.10 | 0.10
Collateral based measurements | Collateral dependent loans | Collateral based measurements | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Discount to reflect current market conditions and ultimate collectability | 0.041 | 0.011

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