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	3 Months Ended	12 Months Ended
	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
State and municipal securities | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 2,152	$ 2,381
State and municipal securities | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Maturity/Call date	1 month	1 month
State and municipal securities | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Maturity/Call date	6 years	6 years
US Muni BQ curve	BBB	BBB
State and municipal securities | Discounted cash flow | Discount rate | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.036	0.036
State and municipal securities | Discounted cash flow | Discount rate | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.051	0.047
State and municipal securities | Discounted cash flow | Weighted-average coupon | Weighted-average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.036	0.036
Corporate obligations | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 31
Corporate obligations | Discounted cash flow | Weighted-average coupon | Weighted-average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0
Corporate obligations | Discounted cash flow | Risk free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0026
Corporate obligations | Discounted cash flow | plus premium for illiquidity (basis points)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0200
Corporate obligations | Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value		$ 35
Corporate obligations | Discounted cash flow | Weighted-average coupon | Weighted-average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		0
Corporate obligations | Discounted cash flow | Risk free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		0.0026
Corporate obligations | Discounted cash flow | plus premium for illiquidity (basis points)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input		0.0200
Collateral dependent loans | Collateral based measurements
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 49,700	$ 46,810
Collateral dependent loans | Collateral based measurements | Discount to reflect current market conditions and ultimate collectability | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0	0
Collateral dependent loans | Collateral based measurements | Discount to reflect current market conditions and ultimate collectability | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.21	0.16
Collateral dependent loans | Collateral based measurements | Measurement Input, Discount By Loan Balance | Weighted-average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.019	0.126