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SECURITIES - Securities Held to Maturity (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Amortized cost and estimated fair value of securities held to maturity [Abstract] |  |
Securities held to maturity | $ 3,001 | $ 3,115
Unrecognized Gains | 23 | 24
Unrecognized Losses | 0 | 0
Securities held to maturity | 3,024 | 3,139
Amortized Cost [Abstract] |  |
Within one year | 1,480 |
After one, but within five years | 1,521 |
After five, but within ten years | 0 |
After ten years | 0 |
Total | 3,001 |
Securities held to maturity | 3,001 | 3,115
Fair Value [Abstract] |  |
Within one year | 1,484 |
After one, but within five years | 1,540 |
After five, but within ten years | 0 |
After ten years | 0 |
Total | 3,024 |
Securities held to maturity | 3,024 | 3,139
Obligations of states and political subdivisions |  |
Amortized cost and estimated fair value of securities held to maturity [Abstract] |  |
Securities held to maturity | 931 | 1,045
Unrecognized Gains | 0 | 0
Unrecognized Losses | 0 | 0
Securities held to maturity | 931 | 1,045
Amortized Cost [Abstract] |  |
Securities held to maturity | 931 | 1,045
Fair Value [Abstract] |  |
Securities held to maturity | 931 | 1,045
Time deposits with other financial institutions |  |
Amortized cost and estimated fair value of securities held to maturity [Abstract] |  |
Securities held to maturity | 2,070 | 2,070
Unrecognized Gains | 23 | 24
Unrecognized Losses | 0 | 0
Securities held to maturity | 2,093 | 2,094
Amortized Cost [Abstract] |  |
Securities held to maturity | 2,070 | 2,070
Fair Value [Abstract] |  |
Securities held to maturity | 2,093 | $ 2,094
Mortgage-backed securities, residential |  |
Amortized Cost [Abstract] |  |
Without single maturity date | 0 |
SBA loan pools |  |
Amortized Cost [Abstract] |  |
Without single maturity date | $ 0 |

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