Fair Value Measurements - Changes in fair value of derivative liability (Details) - USD ($) $ in Thousands |
6 Months Ended | 9 Months Ended | 12 Months Ended |
|---|---|---|---|
Jun. 30, 2026 |
Sep. 30, 2026 |
Dec. 31, 2025 |
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | |||
| Transfers between levels | $ 0 | $ 0 | |
| Derivative liabilities | |||
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | |||
| Balance at beginning of the period | $ 0 | $ 0 | 900 |
| Change in fair value | 0 | (900) | |
| Balance at end of the period | $ 0 | $ 0 |