FAIR VALUE DISCLOSURES - Summary of Financial Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fair Value Measurements Using Level 1
Assets
Impaired loans	$ 0	$ 0
OREO	0	0
Fair Value Measurements Using Level 2
Assets
Impaired loans	0	0
OREO	0	0
Fair Value Measurements Using Level 3
Assets
Impaired loans	16,030	9,268
OREO	$ 484	$ 1,088