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Organization and Description of the Business (Details) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended			9 Months Ended
	Feb. 01, 2021 USD ($) $ / shares shares	Nov. 30, 2020	Mar. 31, 2021 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Issuance of stock (in shares) | shares	1,650,000
Public offering price (in usd per share) | $ / shares	$ 67.00
Proceeds from issuance of common stock upon follow-on public offering, net of issuance costs	$ 103,000					$ 102,959	$ 0
Offering transaction costs	$ 7,600		$ 7,591	$ 104	$ 104
Reverse stock split, conversion ratio		0.4673
Cash, cash equivalents, and investments						506,600
Accumulated deficit						$ 106,791		$ 55,361

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