Disaggregated Revenues Summary of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Total revenues	$ 104,695	$ 99,538	$ 190,169	$ 189,967
Trokendi XR
Disaggregation of Revenue [Line Items]
Total revenues	78,964	76,474	142,657	147,029
Oxtellar XR
Disaggregation of Revenue [Line Items]
Total revenues	23,394	20,556	42,800	39,121
Net product sales
Disaggregation of Revenue [Line Items]
Total revenues	102,358	97,030	185,457	186,150
Royalty revenues
Disaggregation of Revenue [Line Items]
Total revenues	2,337	1,758	4,712	3,067
Licensing revenues
Disaggregation of Revenue [Line Items]
Total revenues	$ 0	$ 750	$ 0	$ 750