Note 6 - Concentration of Revenue (Tables)

9 Months Ended

Sep. 30, 2014

Risks and Uncertainties [Abstract]

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	Three Months Ended Sept. 30,						Nine Months Ended Sept. 30,
(unaudited)	2014			2013			2014			2013
ChemFree Customer A		21.4	%		16.0	%		21.3	%		22.0	%
ChemFree Customer B		19.1	%		28.0	%		17.1	%		18.0	%
ChemFree Customer C		8.6	%		--			10.0	%		--