Significant Balance Sheet Accounts (Tables)

9 Months Ended

Sep. 30, 2019

Balance Sheet Related Disclosures [Abstract]

Schedule of Other Current Assets

Other current assets consisted of the following:

	September 30, 2019		December 31, 2018
	(in thousands)
Reagents	$	244	$	314
Contract assets		150		150
Prepaid expenses		1,160		556
Prepaid income taxes		41		1,251
Marketable securities interest receivable		173		220
Other receivable		27		70
Total	$	1,795	$	2,561