Note 6 - Segment Information

9 Months Ended

Sep. 30, 2012

Segment Reporting Disclosure [Text Block]

6. Segment Information

As defined by the requirements of ASC 280-10-50 Segment Reporting – Overall - Disclosure, 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, computing, consumer, and industrial markets. Geographic revenue is based on the location to which customer shipments are delivered. For the three and nine months ended September 30, 2012 and 2011, the Company derived substantially all of its revenue from sales to customers located outside North America. The following is a list of customers whose sales exceeded 10% of revenue for the three and nine months ended September 30, 2012 and 2011.

	Three months ended September 30,						Nine months ended September 30,
Customers	2012			2011			2012			2011
A		18	%		21	%		16	%		18	%
B		17	%		10	%		15	%		*

(*) represents less than 10%

The following is a summary of revenue by geographic region based on customer ship-to location (in thousands):

	Three months ended September 30,				Nine months ended September 30,
Country	2012		2011		2012		2011
China	$	31,023	$	32,480	$	95,207	$	87,360
Taiwan		7,579		6,110		21,814		16,395
Korea		3,022		2,754		7,581		11,598
Europe		5,004		3,736		12,987		10,778
Japan		2,029		2,475		6,690		8,193
USA		1,437		1,230		4,150		3,196
Other		6,414		4,177		17,170		11,538
Total	$	56,508	$	52,962	$	165,599	$	149,058

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

	Three months ended September 30,				Nine months ended September 30,
Product Family	2012			2011*		2012		2011*
DC to DC Converters	$	49,710	$	44,936	$	145,217	$	128,287
Lighting Control Products		6,798		8,026		20,382		20,771
Total	$	56,508	$	52,962	$	165,599	$	149,058

* 2011 Revenue associated with Audio Amplifiers has been included with DC to DC Converters to conform with current year presentation.

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

	September 30,		December 31,
	2012		2011
China	$	37,859	$	32,566
United States		22,868		15,662
Taiwan		86		98
Japan		65		70
Other		49		51
TOTAL	$	60,927	$	48,447

On July 8, 2011, the Company purchased the property located at 79 Great Oaks Boulevard in San Jose, California, to be used as its new headquarters and sales offices. The property consists of an approximately 106,262 square foot office building and approximately 5.5 acres of land. The $11.0 million purchase price for the property was allocated based on an independent third party valuation with $5.0 million attributable to the building and $6.0 million attributable to the land. The Company moved into its new headquarters and started to depreciate the building in May 2012. The increase of $7.2 million in the long-lived assets for the nine months ended September 30, 2012 for the United States was primarily related to the building improvements at this new location. Buildings and building improvements have a depreciation life of up to 40 years.