SECURITIES - Summary of amortized cost and fair value of debt securities shown by contractual maturity (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Amortized Cost
Due in one year or less	$ 52,015
Due from one year to five years	33,984
Due from five to ten years	44,138
Due after ten years	6,988
Available-for-sale, amortized cost, total	137,125
Mortgage-backed and asset-backed securities	177,340
Total	314,465
Estimated Fair Value
Due in one year or less	50,812
Due from one year to five years	32,914
Due from five to ten years	39,972
Due after ten years	5,320
Available-for-sale, fair value	129,018
Mortgage-backed and asset-backed securities	154,748
Total	283,766
Amortized Cost
Due from one year to five years	0
Due from five to ten years	18,600
Held-to-maturity, amortized cost, total	18,600
Mortgage-backed and asset-backed securities	14,812
Total	33,412
Estimated Fair Value
Due from one year to five years	0
Due from five to ten years	15,007
Held-to-maturity, fair value, total	15,007
Mortgage-backed and asset-backed securities	13,316
Total	$ 28,323