Fair Value Measurements - Summary of Companies Unrealized and Realized Gains and Losses on Investments (Detail) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Gain (Loss) on Securities [Line Items] | ||
| Unrealized gains/(losses) | $ (1,349) | $ 880 |
| Realized gains/(losses) | 65 | 47 |
| Corporate Debt [Member] | ||
| Gain (Loss) on Securities [Line Items] | ||
| Unrealized gains/(losses) | (343) | 307 |
| Realized gains/(losses) | 4 | 0 |
| U.S. Treasuries [Member] | ||
| Gain (Loss) on Securities [Line Items] | ||
| Unrealized gains/(losses) | (761) | 1,066 |
| Mutual Funds Held In Rabbi Trust [Member] | ||
| Gain (Loss) on Securities [Line Items] | ||
| Unrealized gains/(losses) | (245) | (493) |
| Realized gains/(losses) | $ 61 | $ 47 |