Disaggregated Revenues Summary of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Total revenues	$ 102,140	$ 102,996	$ 292,309	$ 292,963
Trokendi XR
Disaggregation of Revenue [Line Items]
Total revenues	77,332	79,834	219,989	226,863
Oxtellar XR
Disaggregation of Revenue [Line Items]
Total revenues	22,702	20,393	65,502	59,514
Net product sales
Disaggregation of Revenue [Line Items]
Total revenues	100,034	100,227	285,491	286,377
Royalty revenues
Disaggregation of Revenue [Line Items]
Total revenues	2,106	2,769	6,818	5,836
Licensing revenues
Disaggregation of Revenue [Line Items]
Total revenues	$ 0	$ 0	$ 0	$ 750