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	9 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($) $ / shares	Dec. 31, 2022 USD ($) $ / shares
Observed market comparable transactions
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other investments | $	$ 21,741	$ 26,120
Fair market value of collateral
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned | $	$ 298	$ 833
Fair market value of collateral | Costs to sell
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, measurement input	0.100	0.100
Credit Value Adjustment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other assets, fair value | $	$ 23	$ 81
Other liabilities, fair value | $	$ 1	$ 2
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	0.0250
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	0.0196	0.0205
Other liabilities, measurement input	0.0078	0.0158
Credit Value Adjustment | Measurement Input, Loss Given Default
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other assets, measurement input	0.30	0.30
Other liabilities, measurement input	0.30	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
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
Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other liabilities, fair value | $	$ 14,481	$ 17,100
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	5 years	5 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	3 years 2 months 12 days	3 years 7 months 9 days