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Fair Value of Financial Instruments - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Mar. 07, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Milestones payment $ 100.0 $ 200.0  
Percentage of probability of achieving milestone 88.00% 88.00%  
Essentialis, Inc. [Member]      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Maximum potential cash earnout payments     $ 21.2