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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Liquidity and Going Concern (Details) $ in Thousands, € in Millions |  | 1 Months Ended | 3 Months Ended |
--- | --- | --- | --- | ---
Jan. 03, 2023 USD ($) | Jan. 03, 2023 EUR (€) | Jan. 31, 2023 USD ($) | Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($)
Cash and cash equivalents |  |  |  |  |  |
Exercise of common warrants |  |  |  | $ 9,025 |  |
Net loss |  |  |  | (83,938) | $ (10,137) |
Accumulated deficit |  |  |  | (552,524) |  | $ (468,586)
Cash and cash equivalents |  |  |  | $ 146,484 |  | $ 49,898
Substantial Doubt about Going Concern, within One Year |  |  |  | false |  |
Advanz Pharma | License and Supply Agreement |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  |
Upfront payment received | $ 10,700 | € 10.0 | $ 10,700 |  |  |
Leerink ATM Agreement |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  |
Proceeds from issuance of shares and warrants and warrant exercises, net |  |  |  | $ 113,800 |  |

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