Collaborative Arrangements and Licensing Agreements - Biogen (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
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| 2017 SMA [Member] | |||||
| Collaborative Arrangements and Licensing Agreements [Abstract] | |||||
| Next payment to be achieved | $ 55,000 | $ 55,000 | |||
| Cumulative payments received | 130,000 | 130,000 | |||
| 2017 SMA [Member] | Salanersen [Member] | |||||
| Collaborative Arrangements and Licensing Agreements [Abstract] | |||||
| Revenue | 45,000 | ||||
| 2018 Neurology [Member] | |||||
| Collaborative Arrangements and Licensing Agreements [Abstract] | |||||
| Revenue | 15,000 | ||||
| Next payment to be achieved | 7,500 | 7,500 | |||
| Cumulative payments received | 1,100,000 | 1,100,000 | |||
| Biogen [Member] | |||||
| Collaborative Arrangements and Licensing Agreements [Abstract] | |||||
| Revenue | 133,866 | $ 71,942 | 195,552 | $ 137,059 | |
| Deferred contract revenue | $ 120,100 | $ 120,100 | $ 151,200 | ||
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- Definition Cumulative amount of payments received under the collaboration agreement as of the end of the reporting period. No definition available.
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- Definition The next payment to be achieved under the collaboration agreement. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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