Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended	248 Months Ended
	Apr. 30, 2018	Jan. 31, 2014	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2018	Sep. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Fully amortized intangible assets			$ 137,894		$ 137,894			$ 137,894	$ 137,894
Fully amortized intangible assets, amortization			22,046		22,046			22,046	16,525
Intangible asset amortization			1,751	$ 380	5,521	$ 1,137
HETLIOZ®
Finite-Lived Intangible Assets [Line Items]
Acquisition of intangible assets		$ 8,000					$ 25,000	37,500
Cumulative worldwide sales milestone	$ 250,000
Fully amortized intangible assets			33,000		33,000			33,000	33,000
Fully amortized intangible assets, amortization			17,034		17,034			17,034	15,937
Fanapt®
Finite-Lived Intangible Assets [Line Items]
Fully amortized intangible assets			27,900		27,900			27,900	27,900
Fully amortized intangible assets, amortization			$ 27,900		$ 27,900			$ 27,900	$ 27,900