INVESTMENT SECURITIES, Investment Securities by Contractual Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Securities available-for-sale, Amortized Cost [Abstract]
Due in one year or less	$ 85	$ 817
After one year through five years	13,107	9,594
After five years through ten years	5,419	6,855
After ten years	862	0
Amortized cost	19,473	17,266
Securities available for sale, Estimated Fair Value [Abstract]
Due in one year or less	85	820
After one year through five years	13,293	9,667
After five years through ten years	5,441	6,821
After ten years	860	0
Estimated fair value	19,679	17,308
Securities held to maturity, Amortized Cost [Abstract]
Due in one year or less	0	0
After one year through five years	2,612	3,821
After five years through ten years	758	765
After ten years	0	0
Amortized cost	3,370	4,586
Securities held to maturity, Estimated Fair Value [Abstract]
Due in one year or less	0	0
After one year through five years	2,703	3,965
After five years through ten years	860	889
After ten years	0	0
Estimated fair value	3,563	4,854
Securities measured at fair value [Abstract]
Amortized cost	66	66
Fair value	$ 198	$ 149