Business Segments, Concentration of Credit Risk and Significant Customers

3 Months Ended

Mar. 31, 2015

Business Segments, Concentration of Credit Risk and Significant Customers

Business Segments, Concentration of Credit Risk and Significant Customers

Note 5. Business Segments, Concentration of Credit Risk and Significant Customers

The Company operates in one business segment and uses one measurement of profitability for its business.  Net revenue attributed to the United States and to all foreign countries is based on the geographical location of the customer.

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash, cash equivalents, short-term and long-term investments and accounts receivable. Cash, cash equivalents and short-term and long term investments are deposited with high credit-quality institutions.

The Company recognized revenue from licensing of its technologies and shipment of ICs to customers in North America, Asia and Europe as follows (in thousands):

	Three Months Ended
	March 31,
	2015		2014
Taiwan	$	479	$	337
North America	177		350
Japan	112		623
Rest of world	8		11
Europe	—		11
Total net revenue	$	776	$	1,332

Customers who accounted for at least 10% of total net revenue were:

	Three Months Ended March 31,
	2015		2014
Customer A	60	%	24	%
Customer B	10	%	38	%
Customer C	*		20	%

*Represents less than 10%

Two customers accounted for 80% of net accounts receivable at March 31, 2015. Three customers accounted for 97% of net accounts receivable at December 31, 2014.