FAIR VALUE - Summary of assets measured at fair value on nonrecurring basis (Details) - Fair Value, Nonrecurring - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	$ 33,569	$ 39,656
Commercial and Industrial1 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	23,353	25,738
Consumer and Other
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	3,798	7,500
1-4 Family Residential
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	2,438	2,438
Owner Occupied CRE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	3,980	3,980
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial and Industrial1 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Consumer and Other
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | 1-4 Family Residential
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Owner Occupied CRE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	0	0
Significant Other Observable Inputs (Level 2)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	0	0
Significant Other Observable Inputs (Level 2) | Commercial and Industrial1 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	0	0
Significant Other Observable Inputs (Level 2) | Consumer and Other
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	0	0
Significant Other Observable Inputs (Level 2) | 1-4 Family Residential
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	0	0
Significant Other Observable Inputs (Level 2) | Owner Occupied CRE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	0	0
Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	33,569	39,656
Significant Unobservable Inputs (Level 3) | Commercial and Industrial1 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	23,353	25,738
Significant Unobservable Inputs (Level 3) | Consumer and Other
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	3,798	7,500
Significant Unobservable Inputs (Level 3) | 1-4 Family Residential
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	2,438	2,438
Significant Unobservable Inputs (Level 3) | Owner Occupied CRE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net recorded investment	$ 3,980	$ 3,980