Commitments and Contingencies - HETLIOZ - Additional Information (Details) - HETLIOZ® - USD ($) $ in Millions	1 Months Ended	3 Months Ended		218 Months Ended
	Dec. 31, 2022	Mar. 31, 2022	Mar. 31, 2015	Mar. 31, 2022
Commitments and Contingencies [Line Items]
Development and milestone obligations paid to third party				$ 37.5
Intangible assets capitalized			$ 25.0	$ 33.0
Royalty payment period		10 years
Percentage of future sublicense fees payable to third-party		mid-twenties
Non-US
Commitments and Contingencies [Line Items]
Royalty payable percentage on net sales		5.00%
U.S.
Commitments and Contingencies [Line Items]
Royalty payable percentage on net sales		10.00%
U.S. | Forecast
Commitments and Contingencies [Line Items]
Royalty payable percentage on net sales	5.00%