Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Segment Reporting, Asset Reconciling Item [Line Items]
Total revenues		$ 149,824	$ 143,644
Cost of goods sold	[1]	15,763	16,309
Total research and development expenses		26,927	24,930
Net earnings (loss)		(11,827)	124
Reportable Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total revenues		149,824	143,644
Cost of goods sold		15,763	16,309
Selling		42,614	39,014
Marketing		20,664	20,553
General and administrative		26,666	26,949
Total external development program expenses		16,432	14,710
Internal employee-related expenses		10,495	10,220
Total research and development expenses		26,927	24,930
Other segment items		29,017	15,765
Net earnings (loss)		(11,827)	124
Reportable Segment | ONAPGO
Segment Reporting, Asset Reconciling Item [Line Items]
Total external development program expenses		472	784
Reportable Segment | SPN-820
Segment Reporting, Asset Reconciling Item [Line Items]
Total external development program expenses		4,763	6,738
Reportable Segment | SPN-817
Segment Reporting, Asset Reconciling Item [Line Items]
Total external development program expenses		3,571	1,122
Reportable Segment | Qelbree
Segment Reporting, Asset Reconciling Item [Line Items]
Total external development program expenses		4,413	2,051
Reportable Segment | Early stage programs and other expenses
Segment Reporting, Asset Reconciling Item [Line Items]
Total external development program expenses		$ 3,213	$ 4,015

[1] Excludes amortization of acquired intangible assets