SECURITIES - Quantitative Disclosure of Available For Sale of Securities (Details) - position	Sep. 30, 2021	Dec. 31, 2020
Number of securities with unrealized losses [Abstract]
Number of available-for-sale securities in unrealized loss positions, less than 12 months	200	7
Number of available-for-sale securities in unrealized loss positions, 12 months or more	0	1
Number of available-for-sale securities in unrealized loss positions, total	200	8
U.S. government sponsored agencies
Number of securities with unrealized losses [Abstract]
Number of available-for-sale securities in unrealized loss positions, less than 12 months	12	3
Number of available-for-sale securities in unrealized loss positions, 12 months or more	0	0
Number of available-for-sale securities in unrealized loss positions, total	12	3
Mortgage-backed securities: residential
Number of securities with unrealized losses [Abstract]
Number of available-for-sale securities in unrealized loss positions, less than 12 months	25	2
Number of available-for-sale securities in unrealized loss positions, 12 months or more	0	1
Number of available-for-sale securities in unrealized loss positions, total	25	3
Mortgage-backed securities: commercial
Number of securities with unrealized losses [Abstract]
Number of available-for-sale securities in unrealized loss positions, less than 12 months	1	0
Number of available-for-sale securities in unrealized loss positions, 12 months or more	0	0
Number of available-for-sale securities in unrealized loss positions, total	1	0
State and municipal securities
Number of securities with unrealized losses [Abstract]
Number of available-for-sale securities in unrealized loss positions, less than 12 months	162	2
Number of available-for-sale securities in unrealized loss positions, 12 months or more	0	0
Number of available-for-sale securities in unrealized loss positions, total	162	2