Short-Term Investments - Summary of Short-Term Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 29,698	$ 27,522
Unrealized Gains		1
Unrealized Losses	(44)	(6)
Estimated Fair Value	29,654	27,517
Commercial Paper
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	18,433	16,991
Unrealized Gains		1
Unrealized Losses	(33)	(5)
Estimated Fair Value	18,400	16,987
U.S. Government and Agency Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	11,265	10,531
Unrealized Losses	(11)	(1)
Estimated Fair Value	$ 11,254	$ 10,530

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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