Segment information - Long-Lived Assets (Details) - USD ($) $ in Thousands |
Mar. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Segment Reporting Information [Line Items] | ||
| Long-lived assets | $ 31,212 | $ 33,704 |
| United States | ||
| Segment Reporting Information [Line Items] | ||
| Long-lived assets | 27,877 | 28,907 |
| United Kingdom | ||
| Segment Reporting Information [Line Items] | ||
| Long-lived assets | $ 3,335 | $ 4,797 |