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SUBSEQUENT EVENTS (Details) - USD ($) |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 15, 2022 | Jan. 12, 2022 | Feb. 01, 2019 | Jan. 25, 2021 | Mar. 31, 2022 | Mar. 16, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Aug. 12, 2021
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Carrying amount of assets |  |  |  |  |  |  | $ 7,800,000 |  |
Cantor Sales Agreement |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Number of shares issued in transaction (in shares) |  |  |  | 2,778,012 |  |  | 1,955,313 | 1,175,000 |
Consideration received in a transaction |  |  | $ 50,000,000.0 |  |  |  |  | $ 8,000,000 |
Consideration receivable on transaction |  |  |  |  |  |  |  |  | $ 50,000,000
Forecast | Minimum |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from sale of franchises |  |  |  |  | $ 21,300,000 |  |  |  |
Forecast | Maximum |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from sale of franchises |  |  |  |  | 22,300,000 |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Cash consideration |  | $ 25,000,000 |  |  |  |  |  |  |
Contingent consideration receivable |  | 25,000,000 |  |  |  |  |  |  |
Upfront payment |  | 20,000,000 |  |  |  |  |  |  |
Additional consideration receivable |  | 5,000,000 |  |  |  |  |  |  |
Milestone payments receivable upon achievement of net sales |  | 450,000,000 |  |  |  |  |  |  |
Milestone payments upon achieving certain criteria, exceeding annual net sales |  | 100,000,000 |  |  |  |  |  |  |
Inventory |  | 7,300,000 |  |  |  |  |  |  |
Liabilities transferred |  | $ 0 |  |  |  |  |  |  |
Subsequent Event | Cantor Sales Agreement |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Number of shares issued in transaction (in shares) |  |  |  |  |  | 2,465,500 |  |  |
Consideration received in a transaction |  |  |  |  |  | $ 1,500,000 |  |  |
Subsequent Event | Lincoln Park Equity Purchase Agreement |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Number of shares issued in transaction (in shares) | 1,667,593 |  |  |  |  |  |  |  |
Consideration receivable on transaction | $ 30,000,000 |  |  |  |  |  |  |  |
Term of equity purchase agreement | 36 months |  |  |  |  |  |  |  |
Subsequent Event | Minimum |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Estimated gain on sale of MST Franchise |  |  |  |  | 13,500,000 |  |  |  |
Transaction costs |  |  |  |  | 2,700,000 |  |  |  |
Subsequent Event | Maximum |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Estimated gain on sale of MST Franchise |  |  |  |  | 14,500,000 |  |  |  |
Transaction costs |  |  |  |  | $ 3,700,000 |  |  |  |

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