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REDEEMABLE PREFERRED STOCK - Series D Preferred Stock Narrative (Details) - Series D Preferred Stock - $ / shares | Dec. 31, 2021 | Dec. 31, 2020 | Jun. 29, 2020 | Jun. 28, 2020 | Feb. 29, 2020
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Class of Stock [Line Items] |  |  |  |  |
Preferred stock, par value (in usd per share) | $ 0.001 | $ 0.001 |  |  | $ 0.001
Continuous Public Offering |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Purchase price (in usd per share) |  |  | $ 24.50 | $ 25.00 | $ 25.00

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