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COMMITMENTS AND CONTINGENCIES - Narrative (Details) $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Dec. 22, 2022 USD ($) quarterly_payment | Feb. 10, 2021 | Mar. 11, 2020 | Dec. 31, 2024 USD ($) | Jun. 30, 2021 USD ($) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2024 USD ($)
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Contract cost incurred in research and development activities |  |  |  |  |  | $ 42,200 |  |  |
Supply Agreement, Patheon Inc. |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Purchase commitment, option for non-auto renewal, prior written notice period |  |  | 18 months |  |  |  |  |  |
Minimum purchase commitment |  |  |  |  |  | 1,100 |  |  |
Siegfried Evionnaz SA |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Cost of purchased minimum quantity product |  |  |  |  |  | 15,600 |  |  |
Long-term minimum purchase commitment |  |  |  |  |  | 3,600 |  |  | $ 3,600
STA Pharmaceutical Hong Kong Limited |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Long-term minimum purchase commitment |  |  |  |  |  | 6,100 |  |  |
WuXi STA |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Long-term minimum purchase commitment |  |  |  |  |  | 900 |  |  |
Purchase commitment, option to extend, prior notice period |  | 18 months |  |  |  |  |  |  |
Long-term purchase commitment, option to terminate, prior notice period (at least) |  | 180 days |  |  |  |  |  |  |
Esteve |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Long-term minimum purchase commitment |  |  |  |  |  | 7,600 |  |  |
BioVectra Inc |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Long-term purchase commitment, termination amount payable | $ 32,500 |  |  |  |  |  |  |  |
Long-term purchase commitment, upfront payment termination amount | $ 17,500 |  |  |  |  |  |  |  |
Long-term purchase commitment, termination amount payable after upfront payment, number of quarterly periods | quarterly_payment | 6 |  |  |  |  |  |  |  |
Long-term purchase commitment, termination amount payable after upfront payment, per quarter | $ 2,500 |  |  |  |  |  |  |  |
Long-term purchase commitment, termination amount payable after upfront payment | $ 15,000 |  |  |  |  |  |  |  |
Long-term purchase commitment, imputed interest on termination amount payable | 17.00% |  |  |  |  |  |  |  |
Long-term purchase commitment, upfront termination amount classified as cost of goods sold | $ 11,200 |  |  |  |  |  |  |  |
Amortization discount |  |  |  |  |  | 200 | $ 500 |  |
Panion & BF Biotech, Inc | License Agreement |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Royalty payments |  |  |  |  |  | $ 2,600 | $ 1,900 |  |
Cyclerion | License Agreement |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Expiration period beginning with first commercial sale |  |  |  |  |  | 10 years |  |  |
Termination period, prior written notice (in days) |  |  |  |  |  | 180 days |  |  |
Cyclerion | License Agreement | Acquired Licenses |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Upfront payments |  |  |  |  |  |  |  | $ 3,000 |
Cyclerion | License Agreement | Acquired Licenses | Research and Development Expense |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Upfront payments |  |  |  |  | $ 3,000 |  |  |  |
Cyclerion | Cyclerion Amendment | Acquired Licenses |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Upfront payments |  |  |  | $ 1,250 |  |  |  |  |
Contingent consideration |  |  |  | $ 500 |  |  |  |  | 500
Specified development and regulatory milestone payments, contingent on a product-by-product basis |  |  |  |  |  | $ 198,500 |  |  |
Cyclerion | Cyclerion Amendment | Acquired Licenses | Maximum |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Tiered royalties |  |  |  |  |  | 20.00% |  |  |
Cyclerion | Cyclerion Amendment | Acquired Licenses | Research and Development Expense |  |  |  |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Upfront payments |  |  |  |  |  |  |  |  | 1,250
Contingent consideration |  |  |  |  |  |  |  |  | $ 500

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