Note 6 - Concentration of Revenue (Tables)

9 Months Ended

Sep. 30, 2013

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)	2013			2012			2013			2012
ChemFree Customer A		16.0	%		29.0	%		22.0	%		29.0	%
ChemFree Customer B		--			10.0	%		--			10.0	%
ChemFree Customer C		28.0	%		11.5	%		18.0	%		12.9	%