Description of the Business (Details) $ in Thousands |
6 Months Ended | ||
|---|---|---|---|
|
May 22, 2026
USD ($)
tranche
|
Jun. 30, 2026
USD ($)
|
Dec. 31, 2025
USD ($)
|
|
| Cash and Cash Equivalents [Line Items] | |||
| Accumulated deficit | $ (845,786) | $ (822,373) | |
| Cash, cash equivalents, restricted cash and marketable securities | 149,300 | ||
| 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% | ||
| Line of Credit | Loan Agreement | |||
| Cash and Cash Equivalents [Line Items] | |||
| Maximum borrowing capacity | $ 150,000 | ||
| Number of tranches | tranche | 4 | ||
| Proceeds from lines of credit | $ 50,000 |
| 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 Number Of Tranches 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| 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://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|