Marketable Securities - Summary of Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 217,604	$ 189,949
Gross Unrealized Gains	4	13
Gross Unrealized Losses	(73)
Fair Value	217,535	189,962
Corporate Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	202,565
Gross Unrealized Gains	2
Gross Unrealized Losses	(71)
Fair Value	202,496
U.S. Government Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	10,042
Gross Unrealized Gains	1
Gross Unrealized Losses	(2)
Fair Value	10,041
U.S. Treasury Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	4,997	189,949
Gross Unrealized Gains	1	13
Fair Value	$ 4,998	$ 189,962

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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