| 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 | Dec 31, 2022 | Sep 30, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Collaboration revenue | — | — | ||||||||||||||
| YoY growth | — | — | — | — | ||||||||||||
| Operating expenses: | ||||||||||||||||
| Research and development | ||||||||||||||||
| General and administrative | ||||||||||||||||
| Impairment of long-lived assets | — | — | — | |||||||||||||
| Restructuring expenses | — | |||||||||||||||
| Total operating expenses | ||||||||||||||||
| % of revenue | — | — | — | — | ||||||||||||
| Loss from operations | ||||||||||||||||
| % of revenue | — | — | — | — | ||||||||||||
| Other income, net | ||||||||||||||||
| Net loss | ||||||||||||||||
| % of revenue | — | — | — | — | ||||||||||||
| Net loss per share, basic | — | |||||||||||||||
| Net loss per share, diluted | — |