The Company operates as one operating segment. Sales to customers outside the United States represented 24% and 28% for the three months ended June 30, 2019 and 2018, respectively, and 28% and 27% for the six months ended June 30, 2019 and 2018, respectively.

As of June 30, 2019 and December 31, 2018, balances due from foreign customers, in U.S. dollars, were $1.1 million and $0.9 million, respectively.

The following presents total net sales by geographic territory for the three and six months ended June 30, 2019 and 2018 (in thousands):



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2019		2018		2019		2018
Domestic	$	1,380	$	1,220	$	2,551	$	1,815
Foreign	426		472		1,006		678
	$	1,806	$	1,692	$	3,557	$	2,493

The following presents total net sales by line of business for the three and six months ended June 30, 2019 and 2018 (in thousands):



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2019		2018		2019		2018
Accelerate Pheno™ revenue	$	1,777	$	1,665	$	3,483	$	2,435
Other revenue	29		27		74		58
	$	1,806	$	1,692	$	3,557	$	2,493

The following presents total net sales by products and services for the three and six months ended June 30, 2019 and 2018 (in thousands):



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2019		2018		2019		2018
Products	$	1,695	$	1,671	$	3,389	$	2,467
Services	111		21		168		26
	$	1,806	$	1,692	$	3,557	$	2,493

Lease income included in net sales was $0.2 million for each of the three months ended June 30, 2019 and 2018, respectively, and $0.4 million and $0.2 million for the six months ended June 30, 2019 and 2018, respectively, which does not represent revenues recognized from contracts with customers.

The following presents long-lived assets (excluding intangible assets) by geographic territory (in thousands):



	June 30,		December 31,
	2019		2018
Domestic	$	6,710	$	6,309
Foreign	914		994
	$	7,624	$	7,303