Note 7 - Segment and Geographic Information

9 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

Segment Reporting Disclosure [Text Block]

7. SEGMENT AND GEOGRAPHIC INFORMATION

As defined by the requirements of ASC 280-10-55, Segment Reporting – Overall – Implementation, the Company operates in one reportable segment that includes the design, development, marketing and sale of high-performance, mixed-signal analog semiconductors for the communications, storage and computing, consumer and industrial markets. The Company’s chief operating decision maker is its chief executive officer. 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, 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 greater than 10% of the Company's total revenue or accounts receivable balances greater than 10% of the Company’s total accounts receivable:

	Revenue												Accounts Receivable
	Three Months Ended September 30,						Nine Months Ended September 30,						September 30,			December 31,
Customers	2014			2013			2014			2013			2014			2013
Distributor A		26	%		33	%		26	%		32	%		25	%		32	%
Distributor B		10	%		*			10	%		*			13	%		17	%

* Represents less than 10%.

Both of the customers are third-party distributors. The Company’s agreements with these distributors were made in the ordinary course of business and may be terminated with or without cause by either party 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 these 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 few quarters following the termination of any agreement with a distributor.

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

	Three Months Ended September 30,				Nine Months Ended September 30,
Country and Region	2014		2013		2014		2013
China	$	51,796	$	40,577	$	132,585	$	102,099
Taiwan		9,379		8,886		28,080		24,726
Europe		5,212		3,949		14,377		11,226
Korea		4,067		2,599		10,693		7,425
United States		4,079		1,812		9,913		5,552
Japan		2,221		2,285		6,075		5,446
Southeast Asia		1,534		5,103		4,955		17,817
Other		47		136		154		240
Total	$	78,335	$	65,347	$	206,832	$	174,531

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

	Three Months Ended September 30,				Nine Months Ended September 30,
Product Family	2014		2013		2014		2013
DC to DC products	$	70,196	$	57,823	$	185,304	$	154,801
Lighting control products		8,139		7,524		21,528		19,730
Total	$	78,335	$	65,347	$	206,832	$	174,531

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

	September 30,		December 31,
Country	2014		2013
China	$	37,450	$	41,557
United States		33,695		24,719
Bermuda		13,749		-
Other		223		205
Total	$	85,117	$	66,481