Segment Information

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Segment Information

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 making operating decisions and assessing financial performance on a regular basis. Accordingly, the Company considers itself to be one reportable segment, which is comprised of one operating segment, 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):

	Year Ended
	December 31,
	2020		2019		2018
China	$	22,105	$	23,533	$	26,175
Taiwan		6,587		4,061		897
South Korea		4,660		3,414		2,685
Japan		610		908		1,310
Other		377		111		31
Total revenue	$	34,339	$	32,027	$	31,098

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

	Year Ended
	December 31,
	2020		2019		2018
Automotive	$	18,235	$	10,849	$	4,773
Security surveillance		16,104		21,178		26,325
Total revenue	$	34,339	$	32,027	$	31,098

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):

	December 31,		December 31,
	2020		2019
Taiwan	$	575	$	409
United States		33		49
Japan		20		54
South Korea		12		4
China		7		19
Total property and equipment - net	$	647	$	535