Fair Value Measurements and Marketable Debt Securities - Summary of Marketable Debt Securities (Detail) $ in Thousands	Dec. 31, 2020 USD ($)
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 24,489
Gross Unrealized Gains	2
Gross Unrealized Losses	(1)
Fair Value	24,490
U.S Government securities (due within 1 year) [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	2,005
Fair Value	2,005
Corporate Bonds (Due within 1 Year) [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	22,484
Gross Unrealized Gains	2
Gross Unrealized Losses	(1)
Fair Value	$ 22,485

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Publisher FASB
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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

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