FAIR VALUE DISCLOSURES AND REPORTING, THE FAIR VALUE OPTION AND FAIR VALUE MEASUREMENTS - Schedule of Fair Value of Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	$ 1,060,014	$ 1,039,322
Interest rate swap contracts
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Interest rate swaps	11,389	12,170
Interest rate swaps	11,388	12,175
Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	1,060,014	1,039,322
Loans held for sale	2,987	2,914
Recurring basis | Interest rate swap contracts
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Interest rate swaps	11,389	12,170
Interest rate swaps	11,388	12,175
U.S. Treasury | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	5,181	16,675
Obligations of U.S. Government agencies and sponsored entities | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	98,580	104,923
Municipal securities | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	420,701	438,466
Mortgage-backed securities | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	502,435	441,661
Corporate obligations | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	33,117	37,597
Quoted Prices (Level 1)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	5,181	16,675
Loans held for sale	0	0
Quoted Prices (Level 1) | Interest rate swap contracts
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Interest rate swaps	0	0
Interest rate swaps	0	0
Quoted Prices (Level 1) | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	5,181	16,675
Loans held for sale	0	0
Quoted Prices (Level 1) | Recurring basis | Interest rate swap contracts
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Interest rate swaps	0	0
Interest rate swaps	0	0
Quoted Prices (Level 1) | U.S. Treasury | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	5,181	16,675
Quoted Prices (Level 1) | Obligations of U.S. Government agencies and sponsored entities | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	0	0
Quoted Prices (Level 1) | Municipal securities | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	0	0
Quoted Prices (Level 1) | Mortgage-backed securities | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	0	0
Quoted Prices (Level 1) | Corporate obligations | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	0	0
Significant Other Observable Inputs (Level 2)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	1,028,714	1,004,434
Loans held for sale	2,987	2,914
Significant Other Observable Inputs (Level 2) | Interest rate swap contracts
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Interest rate swaps	11,352	12,129
Interest rate swaps	11,352	12,129
Significant Other Observable Inputs (Level 2) | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	1,028,714	1,004,434
Loans held for sale	2,987	2,914
Significant Other Observable Inputs (Level 2) | Recurring basis | Interest rate swap contracts
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Interest rate swaps	11,352	12,129
Interest rate swaps	11,352	12,129
Significant Other Observable Inputs (Level 2) | U.S. Treasury | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	0	0
Significant Other Observable Inputs (Level 2) | Obligations of U.S. Government agencies and sponsored entities | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	98,580	104,923
Significant Other Observable Inputs (Level 2) | Municipal securities | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	394,611	420,283
Significant Other Observable Inputs (Level 2) | Mortgage-backed securities | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	502,435	441,661
Significant Other Observable Inputs (Level 2) | Corporate obligations | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	33,088	37,567
Significant Unobservable Inputs (Level 3)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	26,119	18,213
Loans held for sale	0	0
Significant Unobservable Inputs (Level 3) | Interest rate swap contracts
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Interest rate swaps	37	41
Interest rate swaps	36	46
Significant Unobservable Inputs (Level 3) | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	26,119	18,213
Loans held for sale	0	0
Significant Unobservable Inputs (Level 3) | Recurring basis | Interest rate swap contracts
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Interest rate swaps	37	41
Interest rate swaps	36	46
Significant Unobservable Inputs (Level 3) | U.S. Treasury | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	0	0
Significant Unobservable Inputs (Level 3) | Obligations of U.S. Government agencies and sponsored entities | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	0	0
Significant Unobservable Inputs (Level 3) | Municipal securities | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	26,090	18,183
Significant Unobservable Inputs (Level 3) | Mortgage-backed securities | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	0	0
Significant Unobservable Inputs (Level 3) | Corporate obligations | Recurring basis
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Securities available-for-sale	$ 29	$ 30