Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2020

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenue

The following table summarizes revenue by revenue source and reportable segment as follows:

	Year Ended December 31,
Major Products/Service Lines by Segment (in thousands)	2020		2019		2018
U.S.
Product revenue, net(1)	$	284,885	$	303,989	$	288,580
License and royalty revenues	9,911		—		—
Total U.S. revenues	294,796		303,989		288,580
International
Product revenue, net(1)	42,810		41,287		52,556
License and royalty revenues	1,804		2,061		2,238
Total International revenues	44,614		43,348		54,794
Total revenues	$	339,410	$	347,337	$	343,374

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(1)The Company’s principal products include DEFINITY and TechneLite and are categorized within product revenue, net. The Company applies the same revenue recognition policies and judgments for all of its principal products.

Schedule of contracts with customer

The Company recognized certain revenues as follows:

	Year Ended December 31,
(in thousands)	2020		2019
Amounts included in the contract liability at the beginning of the period	$	33	$	33