Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Accounting Policies [Abstract]

Schedule of product concentration risk

The following table sets forth revenues for each of the Company’s products representing 10% or more of revenues:

	Year Ended December 31,
	2022		2021		2020
PYLARIFY	56.4	%	10.2	%	—	%
DEFINITY	26.2	%	54.7	%	62.8	%
TechneLite	9.5	%	21.5	%	25.4	%

Schedule of estimated useful lives of major classes of depreciable assets

The estimated useful lives of the major classes of depreciable assets are as follows:

Class	Range of Estimated Useful Lives
Buildings	10 - 50 years
Land improvements	15 - 40 years
Machinery and equipment	3 - 15 years
Furniture and fixtures	15 years
Leasehold improvements	Lesser of lease term or 15 years
Computer software	3 - 5 years

Property, plant and equipment, net, consisted of the following:

	December 31,
(in thousands)	2022		2021
Land	$	13,450	$	13,450
Buildings	76,329		73,559
Machinery, equipment and fixtures	92,604		83,608
Computer software	25,864		24,384
Construction in progress	14,047		10,686
	222,294		205,687
Less: accumulated depreciation and amortization	(100,128)		(88,915)
Total property, plant and equipment, net	$	122,166	$	116,772

Schedule of other loss (income)

Other loss (income) consisted of the following:

	Year Ended December 31,
(in thousands)	2022		2021		2020
Foreign currency losses (gains)	$	256	$	274	$	260
Tax indemnification expense (income), net	9,554		7,121		(2,218)
Interest income	(2,613)		(45)		(238)
Interest rate swap termination	(5,494)		—		—
Other	—		—		(2)
Total other loss (income)	$	1,703	$	7,350	$	(2,198)