Income Taxes - Changes in Valuation Allowance for Deferred Tax Assets (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Income Taxes | |||
| Valuation allowance as of beginning of year | $ 183,737 | $ 164,546 | $ 142,637 |
| Increases recorded to income tax provision | 41,511 | 19,191 | 21,909 |
| Valuation allowance as of end of year | $ 225,248 | $ 183,737 | $ 164,546 |