Commitments and Contingencies - (Fanapt) - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2020
November 16, 2016 through December 31, 2019
Fanapt
Royalty payable percentage on net sales	3.00%
Fanapt®
Fanapt
Royalty payable percentage on net sales	6.00%
Royalty payment period	10 years