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STOCK-BASED COMPENSATION PLANS (Details) - Restricted Stock - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
May 31, 2020 | Jul. 31, 2019 | May 31, 2019 | May 31, 2018 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Share-based compensation plans |  |  |  |  |  |  |  |
Unrecognized compensation expense |  |  |  |  | $ 128 |  | $ 128 |
Independent Directors |  |  |  |  |  |  |  |
Share-based compensation plans |  |  |  |  |  |  |  |
Restricted Shares of Common Stock - Individual (in shares) | 5,478 | 81 | 889 | 1,126 |  |  |  |
Restricted Shares of Common Stock - Aggregate (in shares) | 21,912 | 324 | 3,556 | 3,378 |  |  |  |
Stock-based compensation expense |  |  |  |  | $ 55 | $ 56 | $ 167 | $ 138
Award vesting period | 1 year |  |  |  |  |  | 1 year |

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