Description of the Business (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| Cash and Cash Equivalents [Line Items] | ||
| Accumulated deficit | $ (861,555) | $ (822,373) |
| Cash, cash equivalents, restricted cash and marketable securities | 120,400 | |
| Restricted cash and cash equivalents | $ 1,700 | |
| Old Cartesian | ||
| Cash and Cash Equivalents [Line Items] | ||
| Contingent value right, percentage of milestone payments, royalties and other amounts to be distributed | 100.00% |
| X | ||||||||||
- Definition Cash, Cash Equivalents, Restricted Cash And Restricted Cash Equivalents And Debt Securities, Available-For-Sale No definition available.
|
| X | ||||||||||
- Definition Contingent Value Right, Percentage Of Milestone Payments, Royalties And Other Amounts To Be Distributed No definition available.
|
| X | ||||||||||
- 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. No definition available.
|
| X | ||||||||||
- Definition Amount of cash and cash equivalent restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of accumulated undistributed earnings (deficit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|