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Investments and Fair Value Instruments - Summary of Amortized Cost and Fair Value of Investment Securities Portfolio (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | $ 2,757 | $ 9,948
Unrealized Gains | 0 | 101
Unrealized Losses | 0 | 0
Estimated Fair Value | 2,757 | 10,049
Cash Equivalents [Member] | Money Market Funds [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 2,757 | 4,925
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Estimated Fair Value | $ 2,757 | 4,925
Short-term Investments [Member] | Treasury Bills [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost |  | 5,023
Unrealized Gains |  | 101
Unrealized Losses |  | 0
Estimated Fair Value |  | $ 5,124

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