Income Taxes - Components of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Net operating losses	$ 135,298	$ 111,555
Fixed assets	660	1,062
Accrued and others	11,279	1,103
R&D Credits	12,870	5,436
Capitalized R&D expenditures	79,485	32,873
Accrued manufacturing expenses	10,819	2,063
Lease Liability	8,739	5,358
Intangible assets	29,302	6,867
Stock compensation	8,981	4,474
Total	297,434	170,791
Deferred tax liabilities:
ROU asset	(9,269)	(6,357)
Total deferred tax liabilities	(9,269)	(6,357)
Net deferred tax asset	288,165	164,433
Valuation allowance	(288,165)	(164,433)
Net deferred taxes	$ 0	$ 0