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Prepaid and Other Current Assets - Summary of Prepaid and Other Current Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Prepaid Expense and Other Assets, Current [Abstract]
Down payments for inventory	$ 970	$ 1,080
Prepaid research and development	20,156	7,780
Other prepaid expenses	10,434	9,508
Total prepaid assets	31,560	18,368
Royalties receivable	6,534	4,525
Receivable from collaboration agreement	2,563	2,272
Deposits and other current assets	1,061	4,847
Total other current assets	$ 10,158	$ 11,644

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