| Line Item | Dec 31, 2025 | Dec 31, 2024 | Dec 31, 2023 | Dec 31, 2022 | Dec 31, 2021 | Dec 31, 2020 | Dec 31, 2019 | Dec 31, 2018 | Dec 31, 2017 |
|---|---|---|---|---|---|---|---|---|---|
| Expenses | |||||||||
| Research and development expenses | |||||||||
| Administrative expenses | |||||||||
| Total Expenses | |||||||||
| Loss from operations | |||||||||
| Interest income, net | |||||||||
| Other income, net | |||||||||
| Loss before income tax expense | |||||||||
| Income tax expense | — | ||||||||
| Net loss | |||||||||
| Net loss attributable to noncontrolling interests | |||||||||
| Net loss attributable to shareholders of NovaBridge | |||||||||
| Comprehensive loss attributable to redeemable noncontrolling interests | |||||||||
| Comprehensive loss attributable to shareholders of NovaBridge | |||||||||
| Net loss per share - basic | |||||||||
| Net Ioss per share - diluted |