Note 5 - Accounts Receivable and Customer Concentrations

12 Months Ended

Dec. 31, 2015

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

5.	ACCOUNTS RECEIVABLE and customer concentrations

At both December 31, 2015 and 2014, our allowance for doubtful accounts amounted to $0. Net charges against the allowance for doubtful accounts were $0 in both 2015 and 2014.

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
	2015			2014			2015			2014
Customer A		22.5	%		24.7	%		23.6	%		37.1	%
Customer B		18.7	%		12.7	%		6.4	%		--
Customer C		2.0	%		--			28.9	%		--
Customer D		3.9	%		6.2	%		11.6	%		15.4	%