v3.22.4
Intangible Assets - Summary of Intangible Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]    
Net Carrying Amount $ 18,565 $ 20,081
HETLIOZ®    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 33,000 33,000
Accumulated Amortization 14,435 12,919
Net Carrying Amount $ 18,565 $ 20,081