Note 8 - Segment and Geographic Information

6 Months Ended

Jun. 30, 2019

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

8. SEGMENT AND GEOGRAPHIC INFORMATION

The Company operates in one reportable segment that includes the design, development, marketing and sale of high-performance analog solutions for the computing and storage, automotive, industrial, communications and consumer markets. The Company’s chief operating decision maker is its Chief Executive Officer, who reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. The Company derives a majority of its revenue from sales to customers located outside North America, with geographic revenue based on the customers’ ship-to locations.  

The Company sells its products primarily through third-party distributors and value-added resellers, and directly to original equipment manufacturers, original design manufacturers and electronic manufacturing service providers. The following table summarizes those customers with sales equal to 10% or more of the Company's total revenue, or with accounts receivable balances equal to 10% or more of the Company’s total accounts receivable: 

	Revenue												Accounts Receivable
	Three Months Ended June 30,						Six Months Ended June 30,						June 30,			December 31,
Customer	2019			2018			2019			2018			2019			2018
Company A (distributor)		22	%		20	%		22	%		20	%		21	%		25	%
Company B (distributor)		*			10	%		*			10	%		12	%		16	%
Company A (direct)		13	%		*			10	%		*			16	%		*

* Represents less than 10%.

The Company’s agreements with third-party distributors were made in the ordinary course of business and  may be terminated with or without cause by these customers with advance notice. Although the Company  may experience a short-term disruption in the distribution of its products and a short-term decline in revenue if its agreement with any of these customers was terminated, the Company believes that such termination would not have a material adverse effect on its financial statements because it would be able to engage alternative distributors, resellers and other distribution channels to deliver its products to end customers within a short period following the termination of the agreement with the customer.  

The following is a summary of revenue by geographic regions (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
Country or Region	2019		2018		2019		2018
China	$	94,837	$	81,207	$	171,035	$	154,072
Taiwan		16,018		18,150		37,365		34,541
Europe		13,040		12,651		26,024		24,116
Korea		9,623		8,853		19,234		18,640
Southeast Asia		7,122		7,977		15,794		17,002
Japan		6,292		6,486		12,934		12,100
United States		4,013		4,274		9,819		8,029
Other		62		163		165		411
Total	$	151,007	$	139,761	$	292,370	$	268,911

The following is a summary of revenue by product family (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
Product Family	2019		2018		2019		2018
DC to DC	$	139,691	$	127,496	$	272,402	$	246,765
Lighting Control		11,316		12,265		19,968		22,146
Total	$	151,007	$	139,761	$	292,370	$	268,911

The following is a summary of property and equipment, net, by geographic regions (in thousands):

	June 30,		December 31,
Country	2019		2018
China	$	101,872	$	93,096
United States		94,296		39,054
Taiwan		16,795		16,972
Other		867		879
Total	$	213,830	$	150,001