Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation Of Revenue [Line Items]
Total revenues	$ 247,529	$ 279,872	$ 493,749	$ 502,974
VIVITROL
Disaggregation Of Revenue [Line Items]
Total revenues	71,646	88,199	150,415	157,382
ARISTADA/ARISTADA INITIO
Disaggregation Of Revenue [Line Items]
Total revenues	58,769	48,436	109,726	78,734
Product sales, net
Disaggregation Of Revenue [Line Items]
Total revenues	$ 130,415	$ 136,635	$ 260,141	$ 236,116