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COLLABORATION AND LICENSING AGREEMENTS - Narrative (Details) $ in Thousands, $ in Millions, ¥ in Billions | 1 Months Ended | 3 Months Ended | 9 Months Ended | 77 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2017 USD ($) | Nov. 30, 2017 USD ($) | Jun. 30, 2015 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2024 CAD ($) | Sep. 30, 2023 USD ($) | Mar. 31, 2024 USD ($) | Sep. 30, 2024 JPY (¥) | Oct. 31, 2023 USD ($) | Jul. 31, 2023 USD ($) | Oct. 31, 2022 USD ($) | Apr. 30, 2022 USD ($) payment_tranche | Mar. 31, 2018 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  | $ 98,241 | $ 56,391 | $ 217,486 |  | $ 90,093 |  |  |  |  |  |  |
Licensing revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  | 20 | 32,014 | 56 |  | 32,790 |  |  |  |  |  |  |
Non-cash royalty revenue related to the sale of future royalties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  | 809 | 0 | 1,776 |  | 0 |  |  |  |  |  |  |
Product supply revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  | 5,322 | 2,092 | 7,461 |  | 5,354 |  |  |  |  |  |  |
2017 KKC Agreement | Non-cash royalty revenue related to the sale of future royalties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  | 800 |  | 1,800 |  |  |  |  |  |  |  |  |
2017 KKC Agreement | Product supply revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  | 5,300 | 2,100 | 7,500 |  | 5,400 |  |  |  |  |  |  |
Fosun Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  | 0 |  | 0 |  |  |  |  |  |  |  |  |
Fosun Agreement | Licensing revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  | 2,000 |  |  | 2,000 |  |  |  |  |  |  |
Knight Agreement | Licensing revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  | 0 | 0 | 0 |  | 0 |  |  |  |  |  |  |
KKC | 2017 KKC Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Upfront license fees |  | $ 30,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Potential development milestones |  | $ 55,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | $ 35,000 |  |  |  |  |  |
Potential commercialization milestones |  |  |  | 59,800 |  | 59,800 |  |  |  | ¥ 8.5 |  |  |  |  |
Fee receivable for reduction in royalty rate |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 40,000 |
Number of payment tranches for fee receivable for reduction in royalty rate | payment_tranche |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |
KKC | 2017 KKC Agreement | Licensing revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from milestone payments |  |  |  |  | 30,000 |  |  | 30,000 |  |  |  |  | $ 35,000 |  |
Fosun Pharma | Fosun Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from milestone payments |  |  |  | 8,000 |  | 8,000 |  |  |  |  | $ 3,000 | $ 2,000 |  |  |
Upfront payment received | $ 12,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Potential development and commercialization milestones |  |  |  |  |  | $ 113,000 |  |  |  |  |  |  |  |  |
Threshold percentage of net sales for tiered royalties |  |  |  |  |  | 20.00% | 20.00% |  |  |  |  |  |  |  |
Knight | Knight Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Potential development milestones |  |  |  | 700 |  | $ 700 |  |  |  |  |  |  |  |  |
Non-cash royalty revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,300
Potential development and commercialization milestones |  |  |  |  |  | 16,400 | $ 22.2 |  |  |  |  |  |  |  |
AstraZeneca | AZ Termination Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of royalty revenue |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |
Percentage of non-royalty revenue |  |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum potential payment per agreement |  |  | $ 75,000 |  |  |  |  |  |  |  |  |  |  |  |
Aggregate cost of revenue recognized |  |  |  | 50,300 |  | 50,300 |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  | $ 10,000 | $ 5,700 | $ 22,700 |  | $ 8,700 |  |  |  |  |  |  |

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