Segment Information

9 Months Ended

Sep. 30, 2018

4. Segment Information

Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance.

The Company’s chief operating decision maker, the chief executive officer, reviews financial information presented on a consolidated basis for purposes of regularly making operating decisions and assessing financial performance. Accordingly, the Company considers itself to be in one reportable segment, which is comprised of one operating segment relating to the designing, marketing and selling of mixed-signal integrated circuits for the security surveillance and automotive markets.

Product revenue from customers is designated based on the geographic region to which the product is delivered. Revenue by geographic region was as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
China	$	6,992	$	6,968	$	18,175	$	19,806
South Korea		705		705		2,018		2,156
Taiwan		589		277		933		650
Japan		370		150		1,047		714
Other		11		12		17		55
Total revenue	$	8,667	$	8,112	$	22,190	$	23,381

Revenue by principal product lines were as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Security surveillance	$	7,083	$	7,388	$	18,622	$	21,415
Automotive		1,584		724		3,568		1,966
Total revenue	$	8,667	$	8,112	$	22,190	$	23,381

Long-lived assets are attributed to the geographic region where they are located. Net long-lived assets by geographic region were as follows (in thousands):

	September 30,		December 31,
	2018		2017
Taiwan	$	288	$	205
United States		81		92
Japan		73		16
China		5		9
South Korea		5		3
Total property and equipment - net	$	452	$	325