Investments - Summary of Statements of operations (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Shedule Of Equity Method Investment Summarized Statement Of Operations [Line Items]
Revenue	$ 4,089	$ 308
Net loss	(660,147)	(150,049)
GABA Therapeutics Inc [Member]
Shedule Of Equity Method Investment Summarized Statement Of Operations [Line Items]
Loss from continuing operations	(724)	(3,227)
Net loss	$ (724)	$ (3,227)

Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details