Significant Customers, Concentrations of Credit Risk and Geographic Information

12 Months Ended

Dec. 31, 2020

Significant Customers, Concentrations of Credit Risk and Geographic Information

Significant Customers, Concentrations of Credit Risk and Geographic Information

Note 6 ‑ Significant Customers, Concentrations of Credit Risk and Geographic Information

We manage and operate our business through one operating segment.

Net revenues from customers equal to, or greater than, 10% of total net revenues are as follows:


	Year ended December 31,
	2020		2019
Customer A	17	%	<10	%
Customer B	16	%	37	%
Customer C	12	%	10	%
Customer D	<10	%	10	%

Net revenues by geographic area are as follows:


	Year ended December 31,
	2020		2019
	(in thousands)
United States	$	2,832	$	3,726
Asia and Middle East		3,575		2,949
Europe and other		481		630
Revenue, net	$	6,888	$	7,305

Revenues by geographic area are based on the country of shipment destination. The geographic location of distributors and third-party manufacturing service providers may be different from the geographic location of the purchasers and/or ultimate end users.

We provide credit only to creditworthy third parties who are subject to our credit verification procedures. Accounts receivable balances are monitored on an ongoing basis, and accounts deemed to have credit risk are fully reserved. At December 31, 2020, two customers accounted for 47% and 22% of total accounts receivable. At December 31, 2019, four customers accounted for 29%, 20%, 11% and 11% of total accounts receivable. Our allowance for doubtful accounts was $0 at both December 31, 2020 and 2019.

As of December 31, 2020, our long-lived assets were geographically located as follows:


	December 31,		December 31,
	2020		2019
	(in thousands)
United States	$	1,194	$	648
Asia		332		853
Total long-lived assets	$	1,526	$	1,501