Disaggregated Revenues - Schedule of Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Total revenues	$ 661,817	$ 607,521	$ 667,238
Net product sales
Disaggregation of Revenue [Line Items]
Total revenues	637,696	573,933	649,432
Qelbree
Disaggregation of Revenue [Line Items]
Total revenues	241,273	140,192	61,322
GOCOVRI
Disaggregation of Revenue [Line Items]
Total revenues	130,824	119,637	104,421
Oxtellar XR
Disaggregation of Revenue [Line Items]
Total revenues	99,464	113,404	115,345
APOKYN
Disaggregation of Revenue [Line Items]
Total revenues	73,926	75,083	75,305
Trokendi XR
Disaggregation of Revenue [Line Items]
Total revenues	63,201	94,336	261,221
Other
Disaggregation of Revenue [Line Items]
Total revenues	29,008	31,281	31,818
Royalty, licensing and other revenues
Disaggregation of Revenue [Line Items]
Total revenues	$ 24,121	$ 33,588	$ 17,806