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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, 2022 | Dec. 31, 2021
--- | --- | ---
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | $ 18,620 | $ 26,842
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Estimated Fair Value | 18,620 | 26,842
Cash Equivalents [Member] | Money Market Funds [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 18,620 | 26,842
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Estimated Fair Value | $ 18,620 | $ 26,842

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