Note 7 - Segment, Significant Customers and Geographic Information

6 Months Ended

Jun. 30, 2020

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

7. SEGMENT, SIGNIFICANT CUSTOMERS 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 OEMs, ODMs and EMS 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	2020			2019			2020			2019			2020			2019
Distributor A		26	%		22	%		24	%		22	%		27	%		24	%
Distributor B		*			*			*			*			*			11	%
Value-added reseller A		*			*			*			*			19	%		13	%
Direct customer A		*			13	%		*			10	%		*			*

* Represents less than 10%.

The Company’s agreements with these third-party customers 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 the distributors or the value-added reseller 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. If the Company's agreement with the direct customer was terminated, or if sales to such customer decrease significantly in future periods, the Company's operating results could be materially and adversely affected.

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	2020		2019		2020		2019
China	$	112,756	$	94,837	$	218,493	$	171,035
Taiwan		22,322		16,018		38,862		37,365
Europe		13,443		13,040		26,515		26,024
South Korea		12,573		9,623		23,517		19,234
Southeast Asia		11,622		7,122		20,402		15,794
Japan		8,756		6,292		15,646		12,934
United States		4,681		4,013		8,418		9,819
Other		56		62		134		165
Total	$	186,209	$	151,007	$	351,987	$	292,370

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

	Three Months Ended June 30,				Six Months Ended June 30,
Product Family	2020		2019		2020		2019
DC to DC	$	176,113	$	139,691	$	332,988	$	272,402
Lighting Control		10,096		11,316		18,999		19,968
Total	$	186,209	$	151,007	$	351,987	$	292,370

The following is a summary of long-lived assets by geographic regions (in thousands):

	June 30,		December 31,
Country	2020		2019
China	$	129,700	$	113,888
United States		100,716		94,671
Taiwan		17,808		17,652
Other		3,756		2,104
Total	$	251,980	$	228,315