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SALES OF COMMON STOCK (Details) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
May 11, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Class of Stock [Line Items] |  |  |
Common stock, par value (in dollars per share) |  | $ 0.01 | $ 0.01
Equity Distribution Agreement | Distribution Agent |  |  |
Class of Stock [Line Items] |  |  |
Common stock, par value (in dollars per share) | $ 0.01 |  |
Equity Distribution Agreement | Distribution Agent | Common Stock |  |  |
Class of Stock [Line Items] |  |  |
Aggregate offering amount (up to) | $ 37,500,000 |  |
Number of shares of common stock issued and sold (in shares) |  | 46,000 |
Net proceeds on sale of common stock |  | $ 1,100,000 |
Distribution agent's commissions on sale of common stock |  | $ 26,000 |

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