Details of Significant Accounts - Share-based payment, share incentive plan, additional information (Details) - Share incentive plan - $ / shares |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Minimum | ||
| Share-based payment arrangements | ||
| Exercise prices of stock options (in USD per share) | $ 1.84 | |
| Weighted-average remaining contractual period | 6 months 21 days | 1 year 21 days |
| Maximum | ||
| Share-based payment arrangements | ||
| Exercise prices of stock options (in USD per share) | $ 7.20 | |
| Weighted-average remaining contractual period | 3 years 10 months 2 days | 4 years 3 months 29 days |