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Short-term Investments - Summary of Short-term Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale securities, amortized cost	$ 66,464	$ 103,096
Available-for-sale securities, gross unrealized gains	41	257
Available-for-sale securities	66,505	103,353
U.S. Treasury Bills and Government Agency Obligations
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale securities, amortized cost	10,022	20,110
Available-for-sale securities, gross unrealized gains	34	166
Available-for-sale securities	10,056	20,276
U.S. Corporate Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale securities, amortized cost	19,010	11,505
Available-for-sale securities, gross unrealized gains	7	42
Available-for-sale securities	19,017	11,547
Foreign Corporate Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale securities, amortized cost	4,447	15,508
Available-for-sale securities, gross unrealized gains		49
Available-for-sale securities	4,447	15,557
U.S. Commercial Paper
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale securities, amortized cost	4,997	13,997
Available-for-sale securities	4,997	13,997
Foreign Commercial Paper
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale securities, amortized cost	27,988	41,976
Available-for-sale securities	$ 27,988	$ 41,976

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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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