FAIR VALUE - Fair Value of Foreclosed Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Carrying Value | Other real estate owned remeasured at initial recognition
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed assets	$ 0	$ 147	$ 92
Carrying Value | Other real estate owned remeasured subsequent to initial recognition
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed assets	62	35	27
Charge-offs | Other real estate owned remeasured at initial recognition
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed assets	0	(11)	0
Charge-offs | Other real estate owned remeasured subsequent to initial recognition
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed assets	(1)	(10)	(6)
Fair Value | Other real estate owned remeasured at initial recognition
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed assets	0	136	92
Fair Value | Other real estate owned remeasured subsequent to initial recognition
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed assets	$ 61	$ 25	$ 21