Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 137,894	$ 137,894
Accumulated Amortization	22,046	16,525
Net Carrying Amount	115,848	121,369
HETLIOZ®
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	33,000	33,000
Accumulated Amortization	17,034	15,937
Net Carrying Amount	15,966	17,063
PONVORY®
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	104,894	104,894
Accumulated Amortization	5,012	588
Net Carrying Amount	$ 99,882	$ 104,306