Summary of Significant Accounting Policies (Details) shares in Thousands			1 Months Ended		3 Months Ended
	Oct. 11, 2024 USD ($)	Jul. 19, 2024 USD ($)	Jul. 19, 2024 USD ($)	Apr. 30, 2020 USD ($)	Mar. 31, 2025 USD ($) shares	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($) shares	Dec. 31, 2023 USD ($)
Policies
Net Income (Loss)					$ (66,936,000)	$ (67,599,000)
Accumulated deficit					2,634,798,000		$ 2,567,862,000
Cash, cash equivalents and restricted cash					973,768,000	$ 813,817,000	945,587,000	$ 642,095,000
Marketable securities					17,832,000		22,689,000
Short-term Credit Line, outstanding balance					80,345,000		$ 80,362,000
Collateral amount					150,000,000.0
Remaining borrowing capacity					$ 20,000,000.0
Common stock, shares issued | shares					135,932		132,646
Convertible Notes
Policies
Outstanding principal balance		$ 287,500,000	$ 287,500,000	$ 287,500,000
Per annum interest rate (as a percent)		2.25%	2.25%	2.25%
Percentage of principal amount converted	100.00%		100.00%
Convertible Notes Payable	$ 287,400,000
Convertible to shares of common stock	7,500,000			7,411,704
Proceeds from notes payable	$ 100,000
Line Of Credit-UBS
Policies
Collateral amount					$ 150,000,000.0
Remaining borrowing capacity					$ 20,000,000.0