Summary of Significant Accounting Policies - Schedule of Short-term and Long-term Investment Marketable Securities by Security Type (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Available For Sale Securities Fair Value To Amortized Cost Basis [Line Items]
Amortized Cost	$ 179,506	$ 42,010
Gross Unrealized Gains	2	1
Gross Unrealized Losses	(60)	(3)
Estimated Fair Value	179,448	42,008
Corporate Note Securities
Available For Sale Securities Fair Value To Amortized Cost Basis [Line Items]
Amortized Cost	43,468	12,780
Gross Unrealized Gains	0
Gross Unrealized Losses	(24)	(3)
Estimated Fair Value	43,444	12,777
Corporate Note Securities \| Long Term Investments
Available For Sale Securities Fair Value To Amortized Cost Basis [Line Items]
Amortized Cost	32,146
Gross Unrealized Losses	(35)
Estimated Fair Value	32,111
Asset-backed Securities
Available For Sale Securities Fair Value To Amortized Cost Basis [Line Items]
Amortized Cost	9,841	4,757
Gross Unrealized Gains		1
Gross Unrealized Losses	(1)
Estimated Fair Value	9,840	4,758
Commercial Paper
Available For Sale Securities Fair Value To Amortized Cost Basis [Line Items]
Amortized Cost	94,051	24,473
Gross Unrealized Gains	2
Estimated Fair Value	$ 94,053	$ 24,473

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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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