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SECURITIES AVAILABLE FOR SALE - Summary of Securities Available for Sale (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost $ 595,922 $ 631,348
Gross Unrealized Gains 9,362 7,251
Gross Unrealized Losses (95,831) (79,083)
Fair Value 509,453 559,516
Obligations of states and political subdivisions thereof    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 115,908 121,939
Gross Unrealized Gains 9,305 7,149
Gross Unrealized Losses (27,805) (21,351)
Fair Value 97,408 107,737
Corporate bonds    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 101,491 102,505
Gross Unrealized Gains 31 33
Gross Unrealized Losses (10,658) (8,206)
Fair Value 90,864 94,332
Debt securities | Obligations of US Government-sponsored enterprises    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 2,218 2,692
Gross Unrealized Gains 1 5
Gross Unrealized Losses (40) (37)
Fair Value 2,179 2,660
Mortgage-backed securities and collateralized mortgage obligations | US Government-sponsored enterprises    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 230,746 249,838
Gross Unrealized Gains 2 14
Gross Unrealized Losses (41,025) (34,825)
Fair Value 189,723 215,027
Mortgage-backed securities and collateralized mortgage obligations | US Government agency    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 84,324 90,318
Gross Unrealized Gains   16
Gross Unrealized Losses (13,890) (10,728)
Fair Value 70,434 79,606
Mortgage-backed securities and collateralized mortgage obligations | Private label    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 61,235 64,056
Gross Unrealized Gains 23 34
Gross Unrealized Losses (2,413) (3,936)
Fair Value $ 58,845 $ 60,154