INVESTMENT SECURITIES - Contractual maturities, Held to maturity (Details) $ in Thousands	Jun. 30, 2023 USD ($)
Held to Maturity, Amortized Cost
Due in one year or less	$ 3
Due after one year through five years	42,253
Due after five years through ten years	29,556
Due after ten years	168,041
Total, Amortized Cost	239,853
Held to Maturity, Estimated Fair Value
Due in one year or less	3
Due after one year through five years	39,101
Due after five years through ten years	24,458
Due after ten years	140,207
Total, Estimated Fair Value	$ 203,769