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STOCKHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Dec. 31, 2020
Stockholders Equity Note [Line Items] |  |  |  |
Issuance of common stock | $ 162,687 | $ 162,687 |  |
Net proceeds from issuance of common stock |  | $ 162,664 |  |
Common stock, shares outstanding | 10,644,192 | 10,644,192 |  | 8,295,272
Class B Preferred Stock |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |
Preferred stock, shares outstanding | 272,636 | 272,636 |  | 272,636
Preferred stock, par value | $ 0.01 | $ 0.01 |  | $ 0.01
Common Stock |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |
Issuance of common stock | $ 23 | $ 23 |  |
Issuance of common stock (in shares) | 2,300,000 | 2,300,000 |  |
Stock price | $ 75,000,000 | $ 75,000,000 |  |
Gross proceed |  | $ 172,500 |  |
Net proceeds from issuance of common stock |  | $ 162,700 |  |
Common stock, shares outstanding | 10,600,000 | 10,600,000 | 8,300,000 |

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