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FAIR VALUE OF FINANCIAL INSTRUMENTS, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2020
FAIR VALUE OF FINANCIAL INSTRUMENTS [Abstract] |  |  |
Selling costs percentage | 10.00% |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, transfers from Level 1 to Level 2 | $ 0 |  | $ 0
Assets, transfers from Level 2 to Level 1 | 0 |  | 0
Liabilities, transfers from Level 1 to Level 2 | 0 |  | 0
Liabilities, transfers from Level 2 to Level 1 | 0 |  | $ 0
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Interest Rate Swap Derivatives [Member] |  |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, fair value | 0 | $ 0 |
Liabilities, fair value | 0 | 0 |
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Government Securities [Member] |  |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, fair value | 0 |  |
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Government Sponsored Entity Securities [Member] |  |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, fair value | 0 | 0 |
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Agency Mortgage-backed Securities, Residential [Member] |  |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, fair value | 0 | 0 |
Recurring [Member] | Significant Other Observable (Level 2) [Member] | Interest Rate Swap Derivatives [Member] |  |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, fair value | 765 | 928 |
Liabilities, fair value | (765) | (928) |
Recurring [Member] | Significant Other Observable (Level 2) [Member] | U.S. Government Securities [Member] |  |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, fair value | 5,166 |  |
Recurring [Member] | Significant Other Observable (Level 2) [Member] | U.S. Government Sponsored Entity Securities [Member] |  |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, fair value | 22,822 | 18,153 |
Recurring [Member] | Significant Other Observable (Level 2) [Member] | Agency Mortgage-backed Securities, Residential [Member] |  |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, fair value | 98,406 | 94,169 |
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Interest Rate Swap Derivatives [Member] |  |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, fair value | 0 | 0 |
Liabilities, fair value | 0 | 0 |
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | U.S. Government Securities [Member] |  |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, fair value | 0 |  |
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | U.S. Government Sponsored Entity Securities [Member] |  |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, fair value | 0 | 0 |
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Agency Mortgage-backed Securities, Residential [Member] |  |  |
Fair Value, Asset and Liabilities [Abstract] |  |  |
Assets, fair value | $ 0 | $ 0 |

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