Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

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,
	2023		2022		2021
PYLARIFY	65.7	%	56.4	%	10.2	%
DEFINITY	21.6	%	26.2	%	54.7	%
TechneLite	6.7	%	9.5	%	21.5	%

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)	2023		2022
Land	$	9,480	$	13,450
Buildings	73,441		76,329
Machinery, equipment and fixtures	102,576		92,604
Computer software	27,259		25,864
Construction in progress	40,964		14,047
	253,720		222,294
Less: accumulated depreciation and amortization	(107,023)		(100,128)
Total property, plant and equipment, net	$	146,697	$	122,166

Schedule of other loss (income)

Other loss (income) consisted of the following:

	Year Ended December 31,
(in thousands)	2023		2022		2021
Foreign currency losses	$	21	$	256	$	274
Tax indemnification expense, net	4,943		9,554		7,121
Interest income	(19,638)		(2,613)		(45)
Interest rate swap termination	—		(5,494)		—
Gain on sale of RELISTOR licensed intangible asset associated with net sales royalties	(51,789)
Other	143		—		—
Total other (income) loss	$	(66,320)	$	1,703	$	7,350