FAIR VALUE OF ASSETS AND LIABILITIES - Qualitative Information About Level 3 Fair Value Measurements (Details) - Nonrecurring $ in Thousands	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Impaired loans	$ 1,630	$ 1,785
Foreclosed real estate	2,183	730
Measurement Input, Appraised Value | Appraisal of collateral
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Impaired loans	1,630	1,785
Measurement Input, Cost to Sell | Appraisal of collateral
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Foreclosed real estate	2,183
Significant Unobservable Inputs (Level III)
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Impaired loans	1,630	1,785
Foreclosed real estate	$ 2,183	$ 730
Significant Unobservable Inputs (Level III) | Measurement Input, Cost to Sell | Appraisal of collateral
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Impaired loans, measurement input (in percentage)	(7.00)	(7.00)
Significant Unobservable Inputs (Level III) | Minimum | Measurement Input, Appraised Value | Appraisal of collateral
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Impaired loans, measurement input (in percentage)	0	0
Significant Unobservable Inputs (Level III) | Maximum | Measurement Input, Appraised Value | Appraisal of collateral
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Impaired loans, measurement input (in percentage)	(72.00)	100.00
Significant Unobservable Inputs (Level III) | Weighted Average | Appraisal of collateral
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Impaired loans, measurement input (in percentage)		(7.00)
Significant Unobservable Inputs (Level III) | Weighted Average | Measurement Input, Appraised Value | Appraisal of collateral
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Impaired loans, measurement input (in percentage)	(3.60)	(7.80)
Significant Unobservable Inputs (Level III) | Weighted Average | Measurement Input, Cost to Sell | Appraisal of collateral
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Impaired loans, measurement input (in percentage)	(7.00)