Sale of Future Royalties - Additional Information (Details) - USD ($)		9 Months Ended
	Jan. 19, 2021	Sep. 30, 2021
Sale Of Future Royalties [Line Items]
Liability related to the sale of future royalties	$ 60,000,000	$ 64,594,985
Annual interest rate on interest expense	10.50%	10.70%
Seltorexant | Royalty Pharma
Sale Of Future Royalties [Line Items]
Upfront payment for royalty interest sold	$ 60,000,000
Potential milestone payments	$ 95,000,000