Note 13 - Major Customers and Accounts Receivable

6 Months Ended

Jun. 30, 2018

Concentration Risk Disclosure [Text Block]

13.	MAJOR CUSTOMERS AND ACCOUNTS RECEIVABLE

For the

three

months ended

June 30, 2018

and

2017,

two

customers accounted for

34%

and

three

customers accounted for

52%

of revenue, respectively. For the

six

months ended

June 30, 2018

and

2017,

two

customers accounted for

37%

and

three

customers accounted for

44%

of revenue, respectively.

Four customers accounted for

53%

of current accounts receivable as of

June 30, 2018.

One customer accounted for

100%

of non-current accounts receivable as of

June 30, 2018

and

December 31, 2017.

Based on prior history with this customer, the Company believes the amount is fully collectable, however, the Company has reserved

$1,000,000

which represents

58%

of the remaining balance owed under the contract, due to the length of time the receivable has been outstanding. At

December 31, 2017,

one

customer accounted for

55%

of current accounts receivable.