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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - NET LOSS PER SHARE (Details) - $ / shares | Apr. 01, 2022 | May 27, 2020
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2020 Pre-Funded Warrant | 2020 Public Offering of Common Stock and Warrants |  |
Warrant to purchase common stock, shares |  | 8,335,239
Warrant exercise price |  | $ 0.001
2022 Pre-Funded Warrant | 2022 Public Offering of Common Stock and Warrants |  |
Warrant to purchase common stock, shares | 18,095,238 |
Warrant exercise price | $ 0.001 |

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