Summary of significant accounting policies and basis of presentation - Impairment of Long Lived Assets (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2024 |
Dec. 31, 2024 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Impairment charge | $ 2,776 | |
| 64 Sidney Street | ||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Impairment charge | $ 2,800 | $ 2,800 |