Note 15 - Significant Customers

12 Months Ended

Dec. 31, 2019

Notes to Financial Statements

Concentration Risk Disclosure [Text Block]

15.  SIGNIFICANT CUSTOMERS

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, or with accounts receivable balances equal to 10% or more of the Company’s total accounts receivable: 

	Revenue									Accounts Receivable
	Year Ended December 31,									December 31,
Customer	2019			2018			2017			2019			2018
Company A (distributor)		23	%		22	%		17	%		24	%		25	%
Company B (distributor)		*			10	%		*			11	%		16	%
Company C (distributor)		*			*			10	%		*			*
Company A (value-added reseller)		*			*			*			13	%		*

* Represents less than 10%.

The Company’s agreements with these third-party distributors and value-added reseller 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 any of these customers 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.