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Description of Business and Basis of Financial Statements (Details) $ in Thousands	99 Months Ended
	Mar. 31, 2024 USD ($) lease	May 01, 2024 employee	Dec. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Subsequent Event [Line Items]
Number of development programs | lease	3
Accumulated deficit	$ (440,476)		$ (410,892)
Proceeds from issuance of private placement	430,900
Cash, cash equivalents and restricted cash	$ 97,312		$ 46,674	$ 92,761	$ 106,745
Subsequent Event
Subsequent Event [Line Items]
Number of employees | employee		80

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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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