Commitments and Contingencies - Litigation (Details)	1 Months Ended	12 Months Ended
	Feb. 29, 2016 defendant	Dec. 31, 2015 claim
Number of claims | claim		0
Subsequent events
Information about litigation matters
Number of defendants | defendant	1
Number of patents	one
Namenda XR
Information about litigation matters
Term of ANDA stays		30 months
Namzaric ANDA
Information about litigation matters
Term of ANDA stays		30 months