FAIR VALUE OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES (Level 3 Fair Value Measurements) (Details) $ in Thousands	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	$ 748,212	$ 737,658
States and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	117,041	116,833
Residential - Non-Government Agencies
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	15,363	16,926
Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	748,212	737,658
Recurring basis | States and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	117,041	116,833
Recurring basis | Residential - Non-Government Agencies
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	15,363	16,926
Significant Unobservable Inputs (Level 3) | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	6,716	6,847
Significant Unobservable Inputs (Level 3) | Recurring basis | States and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	$ 6,048	$ 6,165
Significant Unobservable Inputs (Level 3) | Recurring basis | States and political subdivisions | Valuation Technique, Discounted Cash Flow | Weighted-average discount rate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt Securities, Available-for-Sale, Measurement Input	0.0592	0.0622
Significant Unobservable Inputs (Level 3) | Recurring basis | Residential - Non-Government Agencies
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	$ 668	$ 682
Significant Unobservable Inputs (Level 3) | Recurring basis | Residential - Non-Government Agencies | Valuation Technique, Discounted Cash Flow | Weighted-average discount rate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt Securities, Available-for-Sale, Measurement Input	0.0592	0.0622