Income Tax - Net Operating Losses (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Operating Loss Carryforwards [Line Items] | ||
| Total | $ 2,121,678 | $ 1,951,500 |
| Mainland China | Year 2026 Through 2030 | ||
| Operating Loss Carryforwards [Line Items] | ||
| Operating loss subject to expiration | 66,299 | |
| Mainland China | Year 2026 Through 2035 | ||
| Operating Loss Carryforwards [Line Items] | ||
| Operating loss subject to expiration | 1,611,373 | |
| Hong Kong | ||
| Operating Loss Carryforwards [Line Items] | ||
| Operating loss not subject to expiration | 60,420 | |
| Taiwan | Year 2026 Through 2035 | ||
| Operating Loss Carryforwards [Line Items] | ||
| Operating loss subject to expiration | 2,812 | |
| United States | ||
| Operating Loss Carryforwards [Line Items] | ||
| Operating loss not subject to expiration | 376,963 | |
| Australia | ||
| Operating Loss Carryforwards [Line Items] | ||
| Operating loss not subject to expiration | $ 3,811 |