FAIR VALUE DISCLOSURES OF FINANCIAL ASSETS AND LIABILITIES - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details) - Significant Unobservable Inputs (Level 3) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024 USD ($) $ / shares	Dec. 31, 2023 USD ($) $ / shares
Observed market comparable transactions
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other investments | $	$ 14,714	$ 15,206
Fair market value of collateral
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned | $	$ 1,210	$ 1,569
Fair market value of collateral | Costs to sell
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, measurement input	0.200
Fair market value of collateral | Costs to sell | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, measurement input		0.100
Fair market value of collateral | Costs to sell | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, measurement input		0.200
Fair market value of collateral | Costs to sell | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, measurement input		0.181
Credit Value Adjustment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other assets, fair value | $	$ 44	$ 78
Other liabilities, fair value | $	$ 2	$ 3
Credit Value Adjustment | Measurement Input, CDS Spread | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other assets, measurement input	0.0110	0.0110
Other liabilities, measurement input	0.0001	0.0001
Credit Value Adjustment | Measurement Input, CDS Spread | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other assets, measurement input	0.0360	0.0360
Other liabilities, measurement input	0.0250	0.0250
Credit Value Adjustment | Measurement Input, CDS Spread | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other assets, measurement input	0.0189	0.0195
Other liabilities, measurement input	0.0081	0.0095
Credit Value Adjustment | Measurement Input, Loss Given Default
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other assets, measurement input		0.30
Other liabilities, measurement input		0.30
Credit Value Adjustment | Measurement Input, Loss Given Default | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other assets, measurement input	0	0
Other liabilities, measurement input	0
Credit Value Adjustment | Measurement Input, Loss Given Default | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other assets, measurement input	0.30
Other liabilities, measurement input	0.30
Credit Value Adjustment | Measurement Input, Loss Given Default | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other assets, measurement input	0.30	0.30
Other liabilities, measurement input	0.30
Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other liabilities, fair value | $	$ 13,424	$ 14,023
Discounted cash flow | Timing of Visa litigation resolution | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other liabilities, measurement input, term	1 year	1 year
Discounted cash flow | Timing of Visa litigation resolution | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other liabilities, measurement input, term	4 years 6 months	4 years 9 months
Discounted cash flow | Timing of Visa litigation resolution | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other liabilities, measurement input, term	2 years 11 months 4 days	3 years 21 days