Stock-based Compensation - Summary 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 | ||||
| Total stock-based compensation expense | $ 181 | $ 364 | $ 469 | $ 749 |
| Total unrecognized stock compensation cost | 600 | $ 600 | ||
| Unrecognized compensation cost recognized period (in years) | 1 year 9 months 18 days | |||
| Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense | ||||
| Stock-based Compensation | ||||
| Total stock-based compensation expense | 19 | 39 | ||
| Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense | ||||
| Stock-based Compensation | ||||
| Total stock-based compensation expense | $ 181 | $ 345 | $ 469 | $ 710 |