Segment Information - Schedules of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Net revenue	$ 659,191	$ 557,540
Cost of goods sold	421,131	379,354
Gross profit	238,060	178,186
Selling, general and administrative	112,595	102,096
Research and development	39,298	38,690
Intellectual property legal development expenses	984	1,644
Restructuring and other charges	1,470	510
Change in fair value during the period	100	2,457
(Credit) charges related to legal matters, net	94,359	(436)
Other operating income	0	(1,224)
Operating (loss) income	(10,746)	34,449
Generics
Segment Reporting Information [Line Items]
Net revenue	391,294	343,806
AvKARE
Segment Reporting Information [Line Items]
Net revenue	162,663	122,056
Operating Segments | Generics
Segment Reporting Information [Line Items]
Net revenue	391,294	343,806
Cost of goods sold	239,922	230,551
Gross profit	151,372	113,255
Selling, general and administrative	33,085	27,600
Research and development	34,371	32,359
Intellectual property legal development expenses	960	1,624
Restructuring and other charges	0	99
Change in fair value during the period	0	0
(Credit) charges related to legal matters, net	94,359	(2,444)
Other operating income		(1,224)
Operating (loss) income	(11,403)	55,241
Operating Segments | Specialty
Segment Reporting Information [Line Items]
Net revenue	105,234	91,678
Cost of goods sold	44,800	43,191
Gross profit	60,434	48,487
Selling, general and administrative	25,196	22,379
Research and development	4,927	6,331
Intellectual property legal development expenses	24	20
Restructuring and other charges	946	0
Change in fair value during the period	100	2,457
(Credit) charges related to legal matters, net	0	0
Other operating income		0
Operating (loss) income	29,241	17,300
Operating Segments | AvKARE
Segment Reporting Information [Line Items]
Net revenue	162,663	122,056
Cost of goods sold	136,409	105,612
Gross profit	26,254	16,444
Selling, general and administrative	14,907	12,940
Research and development	0	0
Intellectual property legal development expenses	0	0
Restructuring and other charges	0	0
Change in fair value during the period	0	0
(Credit) charges related to legal matters, net	0	0
Other operating income		0
Operating (loss) income	11,347	3,504
Corporate and Other
Segment Reporting Information [Line Items]
Net revenue	0	0
Cost of goods sold	0	0
Gross profit	0	0
Selling, general and administrative	39,407	39,177
Research and development	0	0
Intellectual property legal development expenses	0	0
Restructuring and other charges	524	411
Change in fair value during the period	0	0
(Credit) charges related to legal matters, net	0	2,008
Other operating income		0
Operating (loss) income	$ (39,931)	$ (41,596)