Supplemental Balance Sheet Information - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Prepaid expenses and other current assets
Prepaid research and development costs	$ 66,772	$ 60,476
Prepaid manufacturing cost	42,225	42,066
Prepaid taxes	32,686	37,320
Other receivables	31,818	37,859
Short-term restricted cash	11,445	11,473	$ 159
Prepaid insurance	7,899	8,872
Other current assets	38,896	56,799
Total	$ 231,741	$ 254,865