Investments - Schedule of unrealized (losses) gains associated equity investments (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract] | ||||
| Net unrealized gain (loss) on equity investments | $ 0 | $ (253) | $ 0 | $ 319 |