Stock-Based Compensation - Schedule of Total stock-based compensation expense related to Scilex's equity incentive plans (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Stock-based compensation expense | $ 140,192 | $ 152 | $ 140,403 | $ 523 | $ 660 | $ 840 |
| Research and development | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Stock-based compensation expense | 29 | 48 | 136 | 102 | 128 | 73 |
| General and administrative | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Stock-based compensation expense | $ 140,163 | $ 104 | $ 140,267 | $ 421 | $ 532 | $ 767 |