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Certain Balance Sheet Items - Prepaid Expenses and Other Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Balance Sheet Related Disclosures [Abstract]
Prepaid manufacturing expenses	$ 30,928	$ 36,850
Other prepaid expenses	53,936	12,902
Other assets	21,304	16,677
Total prepaid expenses and other assets	106,168	66,429
Less long-term portion	(21,237)	(17,816)
Total prepaid expenses and other assets, current	$ 84,931	$ 48,613

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