Revenue from Contracts with Customers (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 208,880	$ 92,509
Total amount awarded	24,000
Product revenue, net
Disaggregation of Revenue [Line Items]
Revenues	180,009	87,319
License and royalty revenues(2)
Disaggregation of Revenue [Line Items]
Revenues	28,871	5,190
Total precision diagnostics
Disaggregation of Revenue [Line Items]
Revenues	86,198	85,755
DEFINITY
Disaggregation of Revenue [Line Items]
Revenues	58,328	55,971
TechneLite
Disaggregation of Revenue [Line Items]
Revenues	22,605	22,800
Other precision diagnostics
Disaggregation of Revenue [Line Items]
Revenues	5,265	6,984
PYLARIFY
Disaggregation of Revenue [Line Items]
Revenues	92,777	0
Other radiopharmaceutical oncology
Disaggregation of Revenue [Line Items]
Revenues	1,327	1,500
Total radiopharmaceutical oncology
Disaggregation of Revenue [Line Items]
Revenues	94,104	1,500
Strategic partnerships and other revenue
Disaggregation of Revenue [Line Items]
Revenues	$ 28,578	$ 5,254