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Stock Plan - Stock-based Compensation Expense Related to Options Granted and Common Stock Issued under 2020 ESPP Recorded and Allocated (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation	$ 2,224	$ 3,324	$ 7,601	$ 9,409
Research and Development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation	1,009	1,500	3,245	4,139
General and Administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation	$ 1,215	$ 1,824	$ 4,356	$ 5,270

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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