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Fair Value Measurements - Summary of Company's Investments (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Schedule Of Available For Sale Securities [Line Items] |  |
Investments, Amortized cost | $ 169,160 | $ 166,143
Investments, Gross unrealized gains | 1,588 | 1,074
Investments, Gross unrealized losses | (71) | (1,957)
Investments, at fair value | 170,677 | 165,260
Corporate Debt [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Securities available-for-sale, Amortized Cost | 58,110 | 55,447
Securities available-for-sale, Gross unrealized gains | 333 | 88
Securities available-for-sale, Gross unrealized losses | (3) | (427)
Securities available-for-sale, Fair value | 58,440 | 55,108
U.S. Treasuries [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Trading securities, Amortized cost | 100,487 | 100,484
Trading securities, Gross unrealized gains | 329 | 86
Trading securities, Gross unrealized losses | (44) | (1,525)
Trading securities, Fair value | 100,772 | 99,045
Mutual Funds Held In Rabbi Trust [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Trading securities, Amortized cost | 10,563 | 10,212
Trading securities, Gross unrealized gains | 926 | 900
Trading securities, Gross unrealized losses | (24) | (5)
Trading securities, Fair value | $ 11,465 | $ 11,107

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