Revenue Interest Purchase Agreement - Derivative Instruments (Detail) - Revenue Interest Purchase Agreement - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
Jun. 30, 2026 |
Mar. 31, 2026 |
Jun. 30, 2026 |
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | |||
| Fair value, beginning of period | $ 23,000 | $ 19,400 | $ 19,400 |
| Embedded contingent derivative liability related to Second Payment | 4,700 | 4,700 | |
| Change in fair value | 700 | (1,100) | |
| Fair value, end of period | $ 23,700 | $ 23,000 | $ 23,700 |