INVESTMENT SECURITIES, Contractual or Expected Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Maturity in years [Abstract]
Due in one year or less	$ 33,806
Due after one year through five years	188,827
Due after five years through ten years	39,515
Due after ten years	33,522
Subtotal	295,670
Mortgage-backed securities & Collateralized mortgage obligations	385,096
Amortized cost	680,766	$ 636,092
Maturity in years [Abstract]
Due in one year or less	33,355
Due after one year through five years	175,412
Due after five years through ten years	34,802
Due after ten years	27,552
Subtotal	271,121
MBS & CMO	336,864
Estimated fair value	$ 607,985	$ 632,213