Stock-Based Compensation - Classification of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Stock-Based Compensation [Abstract] | ||||
| Stock-based compensation expense | $ 22 | $ 17 | $ 47 | $ 84 |
| Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense | ||||
| Stock-Based Compensation [Abstract] | ||||
| Stock-based compensation expense | 0 | 3 | 1 | 5 |
| Location, Statement of Income, Balance [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense | ||||
| Stock-Based Compensation [Abstract] | ||||
| Stock-based compensation expense | $ 22 | $ 14 | $ 46 | $ 79 |