Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2019

Disaggregation of Revenue

Revenues for the three and six months ended June 30, 2019 and 2018 were as follows:

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2019		2018			2019		2018
	(Amounts in thousands)
Product revenue	$	70,670	$	47,743		$	131,282	$	92,542
Royalty and other income		22		(12	)		44		19
Total revenue	$	70,692	$	47,731		$	131,326	$	92,561

Revenue from Significant Customers

Revenue from significant customers is as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
	(Amounts in thousands)
GE Healthcare	$	11,083	$	6,777	$	18,749	$	14,510
MilliporeSigma	$	9,487	$	8,679	$	18,894	$	15,390

Summary of Receivables and Deferred Revenue from Contracts with Customers

The following table provides information about receivables and deferred revenues from contracts with customers as of June 30, 2019 (amounts in thousands):

	2019
Balances from contracts with customers only:
Accounts receivable	$	43,045
Deferred revenue (included in accrued liabilities in the consolidated balance sheets)		3,728
Revenue recognized during the six-month period ending June 30, 2019 relating to:
The beginning deferred revenue balance	$	1,668
Changes in pricing related to products or services satisfied in previous periods		—