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Description of Business and Basis of Financial Statements (Details) $ in Thousands	114 Months Ended
	Jun. 30, 2025 USD ($) program	Jul. 31, 2025 employee	Dec. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Variable Interest Entity [Line Items]
Number of development programs | program	3
Accumulated deficit	$ (563,692)		$ (511,399)
Proceeds from issuance of private placement	496,300
Cash, cash equivalents and restricted cash	$ 55,310		$ 35,668	$ 79,698	$ 46,674
Subsequent Event
Variable Interest Entity [Line Items]
Number of employees | employee		90

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Amount of cash and cash equivalent, and cash and cash equivalent restricted to withdrawal or usage; attributable to continuing operation. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

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