Revenue from Contracts with Customers (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 223,723		$ 101,064	$ 432,603	$ 193,573
Total amount awarded		$ 24,000
Product revenue, net
Disaggregation of Revenue [Line Items]
Revenues	217,782		93,562	397,791	180,881
License and royalty revenues(2)
Disaggregation of Revenue [Line Items]
Revenues	5,941		7,502	34,812	12,692
Total precision diagnostics
Disaggregation of Revenue [Line Items]
Revenues	87,109		90,356	173,307	176,111
DEFINITY
Disaggregation of Revenue [Line Items]
Revenues	62,306		59,842	120,634	115,813
TechneLite
Disaggregation of Revenue [Line Items]
Revenues	19,440		23,772	42,045	46,572
Other precision diagnostics
Disaggregation of Revenue [Line Items]
Revenues	5,363		6,742	10,628	13,726
PYLARIFY
Disaggregation of Revenue [Line Items]
Revenues	130,232		273	223,009	273
Other radiopharmaceutical oncology
Disaggregation of Revenue [Line Items]
Revenues	928		2,539	2,255	4,039
Total radiopharmaceutical oncology
Disaggregation of Revenue [Line Items]
Revenues	131,160		2,812	225,264	4,312
Strategic partnerships and other revenue
Disaggregation of Revenue [Line Items]
Revenues	$ 5,454		$ 7,896	$ 34,032	$ 13,150