Note 7 - Concentration of Revenue

9 Months Ended

Sep. 30, 2017

Concentration Risk Disclosure [Text Block]

Concentration of Revenue

–

The following table indicates the percentage of consolidated revenue represented by each customer that represented more than

percent of consolidated revenue in the

three

and

nine

month periods ended

September 30, 2017

and

2016.

Most of our customers have multi-year contracts with recurring revenue as well as professional services fees that vary by period depending on their business needs.

	Three Months Ended September 30,						Nine Months Ended September 30,
	201 7			2016			2017			2016
Customer A		15.4	%		10.5	%		10.1	%		15.2	%
Customer B		14.3	%		7.3	%		11.6	%		4.6	%
Customer C		13.1	%		8.0	%		11.8	%		10.4	%
Customer D		7.3	%		43.4	%		27.4	%		27.8	%