Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

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,
	2019	2018	2017
DEFINITY	62.6%	53.3%	47.5%
TechneLite	24.9%	28.8%	31.6%

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)	2019			2018
Land	$	13,450		$	13,450
Buildings	75,654			64,444
Machinery, equipment and fixtures	87,763			69,298
Computer software	20,739			19,266
Construction in progress	10,546			24,169
	208,152			190,627
Less: accumulated depreciation and amortization	(91,655		)	(82,739		)
Total property, plant and equipment, net	$	116,497		$	107,888

Schedule of other expense (income)

Other expense (income) consisted of the following:

	Year Ended December 31,
(in thousands)	2019			2018			2017
Foreign currency (gains) losses	$	(33	)	$	557		$	(253	)
Tax indemnification expense (income), net	10,635			(2,855		)	(8,367		)
Interest income	(686		)	(167		)	(18		)
Arbitration award	(3,453		)	—			—
Other income	(242		)	—			—
Total other expense (income)	$	6,221		$	(2,465	)	$	(8,638	)

Schedule of recent account pronouncements

Standard	Description	Effective Date for Company	Effect on the Consolidated Financial Statements
Recently Issued Accounting Standards Not Yet Adopted
ASU 2016-13, “Financial Instruments-Credit Losses (Topic 326)”	This ASU will require financial instruments measured at amortized cost and accounts receivable to be presented at the net amount expected to be collected. The new model requires an entity to estimate credit losses based on historical information, current information and reasonable and supportable forecasts that affect the collectability of the reported amount. ASU 2016-13 is effective for annual reporting periods beginning after December 15, 2019.	January 1, 2020	The Company has completed its assessment on the impact of the standard and concluded that upon adoption of this standard there will not be a material impact to its consolidated financial statements.

Standard	Description	Effective Date for Company	Effect on the Consolidated Financial Statements
Accounting Standards Adopted During the Year Ended December 31, 2019
ASU 2016-02, “Leases (Topic 842)”	This ASU supersedes existing guidance on accounting for leases in “Leases (Topic 840)” and generally requires all leases to be recognized on the balance sheet. In July 2018, an amendment was made that allows companies the option of using the effective date of the new standard as the initial application date (at the beginning of the period in which it is adopted, rather than at the beginning of the earliest comparative period).	January 1, 2019	See Note 13, "Leases" for the required disclosures related to the impact of adopting this standard. The adoption of this standard resulted in the recording of an additional lease asset and lease liability of approximately $1.1 million as of January 1, 2019.