Short-Term Investments - Summary of Maturities of Short-Term Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 57,659	$ 71,782
Estimated Fair Value	57,666	$ 71,783
Due in One Year or Less
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	55,363
Estimated Fair Value	55,369
Due After One Year Through Two Years
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	2,296
Estimated Fair Value	$ 2,297