Note 5 - Accounts Receivable and Customer Concentrations

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

5. ACCOUNTS RECEIVABLE and customer concentrations

At

December 31, 2018

and

2017,

our allowance for doubtful accounts was

$0

.

There were

no

charges against the allowance for doubtful accounts were in

2018

or

2017.

The following table indicates the percentage of consolidated revenue from continuing operations and year-end accounts receivable represented by each customer that represented more than

10

percent of consolidated revenue from continuing operations or year-end accounts receivable.

	Revenue						Accounts Receivable
	2018			2017			2018			2017
Customer A		4.9	%		9.3	%		4.8	%		15.2	%
Customer B		13.2	%		26.6	%		13.9	%		25.8	%
Customer C		7.2	%		11.9	%		4.0	%		9.0	%
Customer D		3.8	%		11.3	%		0.1	%		7.6	%
Customer E		40.1	%		--	%		52.6	%		--	%