Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Revenues	$ 388,180	$ 378,045	$ 765,513	$ 750,809
Product revenue, net
Disaggregation of Revenue [Line Items]
Revenues	376,933	374,547	746,782	741,465
License and royalty revenues
Disaggregation of Revenue [Line Items]
Revenues	11,247	3,498	18,731	9,344
Total oncology
Disaggregation of Revenue [Line Items]
Revenues	240,366	250,642	481,290	508,296
PYLARIFY
Disaggregation of Revenue [Line Items]
Revenues	240,366	250,642	481,290	508,296
Total neurology
Disaggregation of Revenue [Line Items]
Revenues	39,616	0	75,055	0
Neuraceq
Disaggregation of Revenue [Line Items]
Revenues	39,616	0	75,055	0
Total cardiology
Disaggregation of Revenue [Line Items]
Revenues	88,279	83,939	172,906	163,150
DEFINITY
Disaggregation of Revenue [Line Items]
Revenues	88,279	83,939	172,906	163,150
Strategic partnerships and other revenue
Disaggregation of Revenue [Line Items]
Revenues	19,919	11,590	36,262	22,337
SPECT
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ 31,874	$ 0	$ 57,026