| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Operating expenses: | ||||||||||||||
| Research and development | ||||||||||||||
| General, administrative and other | ||||||||||||||
| Total operating expenses | ||||||||||||||
| Loss from operations | ||||||||||||||
| Other income/(expense): | ||||||||||||||
| Change in fair value of warrant liability | — | — | — | — | ||||||||||
| Change in fair value of forward contract liability | — | — | — | — | ||||||||||
| Change in fair value of SEPA put option liability | ||||||||||||||
| Change in fair value of convertible debt | ||||||||||||||
| Commitment fee expenses | — | — | — | — | ||||||||||
| Other expense | — | — | ||||||||||||
| Interest income | ||||||||||||||
| Interest expense | ||||||||||||||
| Total other expense | ||||||||||||||
| Net loss | ||||||||||||||
| Net income (loss) attributable to common stockholders | — | — | — | — | ||||||||||
| Net loss per share, basic | ||||||||||||||
| Net loss per share, diluted |