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SUBORDINATED DEBENTURES - Narrative (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 9 Months Ended
--- | --- | --- | ---
Nov. 30, 2020 | May 31, 2020 | Sep. 30, 2021
Debt Instrument [Line Items] |  |  |
Liquidation value per share |  |  | $ 1,000
Debentures mature date |  |  | 30 years
Long-term Debt |  |  | $ 9,500
Subordinated debentures | Trust II Debentures |  |  |
Debt Instrument [Line Items] |  |  |
Debenture issued |  |  | $ 3,093
Subordinated debentures | Trust II Debentures | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Notice period required for redemption of debentures |  |  | 30 days
Subordinated debentures | Trust II Debentures | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Notice period required for redemption of debentures |  |  | 60 days
Redemption price of debentures as a percentage of principal |  |  | 100.00%
Subordinated debentures | Trust II Debentures | 3 Month LIBOR |  |  |
Debt Instrument [Line Items] |  |  |
Spread on variable rate |  |  | 3.35%
Subordinated debentures | Trust III Debentures |  |  |
Debt Instrument [Line Items] |  |  |
Debenture issued |  |  | $ 2,062
Subordinated debentures | Trust III Debentures | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Notice period required for redemption of debentures |  |  | 30 days
Subordinated debentures | Trust III Debentures | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Notice period required for redemption of debentures |  |  | 60 days
Redemption price of debentures as a percentage of principal |  |  | 100.00%
Subordinated debentures | Trust III Debentures | 3 Month LIBOR |  |  |
Debt Instrument [Line Items] |  |  |
Spread on variable rate |  |  | 1.67%
Subordinated debentures | DCB Trust I Debentures |  |  |
Debt Instrument [Line Items] |  |  |
Debenture issued |  |  | $ 5,155
Subordinated debentures | DCB Trust I Debentures | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Notice period required for redemption of debentures |  |  | 30 days
Subordinated debentures | DCB Trust I Debentures | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Notice period required for redemption of debentures |  |  | 60 days
Redemption price of debentures as a percentage of principal |  |  | 100.00%
Subordinated debentures | DCB Trust I Debentures | 3 Month LIBOR |  |  |
Debt Instrument [Line Items] |  |  |
Spread on variable rate |  |  | 1.80%
Subordinated debentures | Other Debentures Issued in December 2015 |  |  |
Debt Instrument [Line Items] |  |  |
Notice period required for redemption of debentures |  | 30 days |
Redemption price of debentures as a percentage of principal |  | 100.00% |
Debenture issued, par value per instrument issued |  | $ 500 |
Debt instrument maturity start date |  | Nov. 01, 2020 |
Debt instrument maturity end date |  | Nov. 01, 2024 |
Long-term Debt |  |  | $ 9,500
Subordinated debentures | Other Debentures Issued in December 2015 | Directors and Related Parties |  |  |
Debt Instrument [Line Items] |  |  |
Debenture issued |  | $ 10,000 |
Subordinated debentures | Other Debentures Issued in December 2015 | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate |  | 1.00% |
Subordinated debentures | Other Debentures Issued in December 2015 | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate |  | 4.00% |
Subordinated debentures | Other Subordinated Debentures Issued In July 2015 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debentures that matured and were paid off | $ 500 |  |

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