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SECURITIES - Securities Held to Maturity (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Amortized cost and estimated fair value of securities held to maturity [Abstract] |  |
Amortized Cost | $ 2,469,000 | $ 3,115,000
Estimated Fair Value | 2,501,000 | 3,139,000
Unrealized Gains | 32,000 | 24,000
Unrealized Losses | 0 | 0
Amortized Cost |  |
Within one year | 856,000 |
After one, but within five years | 1,613,000 |
After five, but within ten years | 0 |
After ten years | 0 |
Total | 2,469,000 | 3,115,000
Fair Value |  |
Within one year | 863,000 |
After one, but within five years | 1,638,000 |
After five, but within ten years | 0 |
After ten years | 0 |
Total | 2,501,000 | 3,139,000
Gain (loss) on sale of held-to-maturity securities | 0 | 0
Obligations of states and political subdivisions |  |
Amortized cost and estimated fair value of securities held to maturity [Abstract] |  |
Amortized Cost | 326,000 | 1,045,000
Estimated Fair Value | 326,000 | 1,045,000
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Amortized Cost |  |
Total | 326,000 | 1,045,000
Fair Value |  |
Total | 326,000 | 1,045,000
Time deposits with other financial institutions |  |
Amortized cost and estimated fair value of securities held to maturity [Abstract] |  |
Amortized Cost | 2,143,000 | 2,070,000
Estimated Fair Value | 2,175,000 | 2,094,000
Unrealized Gains | 32,000 | 24,000
Unrealized Losses | 0 | 0
Amortized Cost |  |
Total | 2,143,000 | 2,070,000
Fair Value |  |
Total | $ 2,175,000 | $ 2,094,000

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