Note 7 - Segment, Significant Customers and Geographic Information

3 Months Ended

Mar. 31, 2021

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:  

	Three Months Ended March 31,
Customer	2021			2020
Distributor A		26	%		23	%
Distributor B		16	%		*
Direct customer A		*			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 either of the distributors 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 table summarizes those customers with accounts receivable equal to 10% or more of the Company’s total accounts receivable:  

	March 31,			December 31,
Customer	2021			2020
Distributor A		25	%		24	%
Distributor B		18	%		21	%
Value-added reseller A		11	%		13	%
Direct customer A		*			10	%

* Represents less than 10%.

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

	Three Months Ended March 31,
Country or Region	2021		2020
China	$	153,383	$	105,737
Taiwan		30,445		16,540
Europe		20,380		13,072
South Korea		19,287		10,944
Southeast Asia		11,497		8,780
Japan		12,049		6,890
United States		7,302		3,737
Other		112		78
Total	$	254,455	$	165,778

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

	Three Months Ended March 31,
Product Family	2021		2020
DC to DC	$	241,429	$	156,875
Lighting Control		13,026		8,903
Total	$	254,455	$	165,778

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

	March 31,		December 31,
Country	2021		2020
China	$	167,625	$	151,752
United States		101,891		101,768
Taiwan		18,435		18,797
Other		9,790		9,211
Total	$	297,741	$	281,528