Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 137,894	$ 33,000
Accumulated Amortization	16,525	14,435
Net Carrying Amount	121,369	18,565
HETLIOZ®
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	33,000	33,000
Accumulated Amortization	15,937	14,435
Net Carrying Amount	17,063	$ 18,565
PONVORY®
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	104,894
Accumulated Amortization	588
Net Carrying Amount	$ 104,306