LOANS - Recorded investment and number of modifications for TDRs (Details) $ in Thousands	Dec. 31, 2019 USD ($) Integer	Dec. 31, 2018 USD ($) Integer
Residential 1-4 family
Quanity, TDRs with Modifications that Subsequently Defaulted | Integer		1
Balance, TDRs with Modifications that Subsequently Defaulted | $		$ 67
Commercial real estate
Quanity, TDRs with Modifications that Subsequently Defaulted | Integer	1
Balance, TDRs with Modifications that Subsequently Defaulted | $	$ 274
Total
Quanity, TDRs with Modifications that Subsequently Defaulted | Integer	1	1
Balance, TDRs with Modifications that Subsequently Defaulted | $	$ 274	$ 67