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Collaboration Agreements, License Agreement and Revenues (Tables) | 6 Months Ended
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Jun. 30, 2025
Schedule of Drug Product Revenue | Drug product revenue from commercial-grade active pharmaceutical ingredient (“API”) or bulk drug product sales to Astellas and AstraZeneca was as follows for the three and six months ended June 30, 2025 and 2024 (in thousands):
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Astellas Japan Agreement |  | $ | 44 |  |  | $ | (366 | ) |  | $ | 1,825 |  |  | $ | (2,571 | )
Astellas Europe Agreement |  |  | 1,171 |  |  |  | 1,095 |  |  |  | 1,986 |  |  |  | 2,116 |
AstraZeneca U.S./RoW Agreement |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 25,671 |
Drug product revenue, net |  | $ | 1,215 |  |  | $ | 729 |  |  | $ | 3,811 |  |  | $ | 25,216 |
Drug Product Revenue, Net [Member] |
Roll-forward of Related Contract Liabilities | The following table includes a roll-forward of the above-mentioned deferred revenues that are considered as contract liabilities related to drug product (in thousands):
|  | Balance at December 31, 2024 |  |  | Recognized as Revenue |  |  | Reclassified to Accrued Liability / Accounts Payable |  |  | Balance at June 30, 2025 |
Drug product revenue - deferred revenue: |  |  |  |  |  |  |  |  |  |  |  |
Astellas Europe Agreement |  | $ | (9,901 | ) |  | $ | 1,986 |  |  | $ | 1,327 |  |  | $ | (6,588 | )
AstraZeneca Agreements [Member] |
Roll-forward of Related Contract Liabilities | The following table includes a roll-forward of the related deferred revenue that is considered as a contract liability (in thousands):
|  | Balance at December 31, 2024 |  |  | Additions |  |  | Recognized as Revenue (Discontinued Operations) |  |  | Currency Translation and Other |  |  | Balance at June 30, 2025 |
AstraZeneca China performance obligation - deferred revenue |  | $ | (132,097 | ) |  | $ | (63,509 | ) |  | $ | 53,308 |  |  | $ | (649 | ) |  | $ | (142,947 | )

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
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