Schedule of stock-based compensation expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Interim Period, Costs Not Allocable [Line Items] | ||||||
| Stock-based compensation | $ 619 | $ 1,377 | $ 1,575 | $ 3,022 | $ 5,434 | $ 8,921 |
| Research And Development [Member] | ||||||
| Interim Period, Costs Not Allocable [Line Items] | ||||||
| Stock-based compensation | 135 | 567 | 457 | 1,342 | 2,199 | 4,238 |
| General And Administrative [Member] | ||||||
| Interim Period, Costs Not Allocable [Line Items] | ||||||
| Stock-based compensation | $ 484 | $ 810 | $ 1,118 | $ 1,680 | $ 3,235 | $ 4,683 |