SECURITIES - Amortized Cost and Fair Value by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Amortized Cost
Due in less than one year	$ 304	$ 0
Due from one year to five years	658	1,200
Due after five to ten years	28,351	15,518
Due after ten years	58,094	74,225
Mortgage-backed securities	22,397	18,753
Amortized Cost	109,804	109,696
Fair Value
Due in less than one year	304	0
Due from one year to five years	660	1,241
Due after five to ten years	28,992	15,873
Due after ten years	60,695	77,773
Mortgage-backed securities	22,666	19,114
Securities available for sale, at fair value	113,317	114,001
Amortized Cost
Due in less than one year	0	0
Due from one year to five years	0	0
Due after five to ten years	1,101	0
Due after ten years	18,577	0
Mortgage-backed securities	0	0
Amortized Cost	19,678	0
Securities Held to Maturity
Due in less than one year	0	0
Due from one year to five years	0	0
Due after five to ten years	1,125	0
Due after ten years	19,074	0
Mortgage-backed securities	0	0
Securities held to maturity, at amortized cost	20,199	0
Total securities
Amortized Cost	129,482	109,696
Fair Value	$ 133,516	$ 114,001