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Description of Business and Basis of Financial Statements (Details) $ in Thousands	114 Months Ended
	Oct. 31, 2023 USD ($)	Sep. 30, 2023 USD ($) employee lease	Dec. 31, 2022 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of employees | employee		80
Number of development programs | lease		3
Accumulated deficit		$ (389,320)	$ (317,280)
Cash and cash equivalents		$ 59,689	$ 106,745
Subsequent Event
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Proceeds from issuance of private placement	$ 355,900

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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