Note 15 - Significant Customers

12 Months Ended

Dec. 31, 2015

Risks and Uncertainties [Abstract]

Concentration Risk Disclosure [Text Block]

15.  SIGNIFICANT CUSTOMERS

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:

	Year Ended December 31,
Customers	2015			2014			2013
Distributor A		24	%		26	%		32	%
Distributor B		*			*			10	%

____________

* Represents less than 10%.

The following table summarizes those customers with accounts receivable balances greater than 10% of the Company’s total accounts receivable:

	December 31,
Customers	2015			2014
Distributor A		28	%		31	%
Distributor B		17	%		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 these distributors 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 the agreement with the distributor.