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Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Accrued research and development	$ 22,912	$ 28,318
Accrued royalties	6,224	10,197
Accrued payroll liabilities	20,789	51,781
Accrued goods received not invoiced	15,829	5,902
Product revenue reserves	19,222	16,625
Other	16,423	14,983
Total accrued expenses	$ 101,399	$ 127,806

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Accrued payroll liabilities.

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for royalties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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