Balance Sheet Components - Summary of Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 33,371	$ 19,792
Gross Unrealized Gains	0	1
Gross Unrealized Loss	0	0
Fair Value	33,371	19,793
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	30,371	10,794
Gross Unrealized Gains	0	0
Gross Unrealized Loss	0	0
Fair Value	30,371	10,794
U.S. Treasury and government debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,000	8,998
Gross Unrealized Gains	0	1
Gross Unrealized Loss	0	0
Fair Value	$ 3,000	$ 8,999

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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Amount, before tax, of unrealized loss 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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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

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-Publisher FASB
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