Marketable Securities - Components of Marketable Securities by Security Type (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items]
Marketable Securities, Amortized Cost	$ 54,213	$ 66,908
Marketable Securities, Gross Unrealized Losses	(109)	(36)
Marketable Securities, Fair Value	54,104	66,872
U.S. Treasury Securities (due within one year) [Member]
Schedule Of Available For Sale Securities [Line Items]
Marketable Securities, Amortized Cost	51,212	63,907
Marketable Securities, Gross Unrealized Losses	(102)	(33)
Marketable Securities, Fair Value	51,110	63,874
U.S. Government Agency Bonds (due within one year) [Member]
Schedule Of Available For Sale Securities [Line Items]
Marketable Securities, Amortized Cost	3,001	3,001
Marketable Securities, Gross Unrealized Losses	(7)	(3)
Marketable Securities, Fair Value	$ 2,994	$ 2,998

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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Amount of 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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