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Marketable Securities - Summary of Available-for-Sale Marketable Securities (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 22,406,000
Unrealized gains	0
Unrealized losses	(1,000)
Fair value	22,405,000	$ 0
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized cost	2,032,000
Unrealized gains	0
Unrealized losses	(1,000)
Fair value	2,031,000
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized cost	20,374,000
Unrealized gains	0
Unrealized losses	0
Fair value	$ 20,374,000

X

- Definition

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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