Note 5 - Accounts Receivable, Notes Receivable and Customer Concentrations (Details) - Concentration of Revenue	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
ChemFree Customer A [Member] | Customer Concentration Risk [Member]
ChemFree
Customer	18.00%	13.00%
ChemFree Customer A [Member] | Credit Concentration Risk [Member]
ChemFree
Customer	17.00%	13.00%
ChemFree Customer B [Member] | Customer Concentration Risk [Member]
ChemFree
Customer	8.00%	7.00%
ChemFree Customer B [Member] | Credit Concentration Risk [Member]
ChemFree
Customer	15.00%	14.00%
ChemFree Customer C [Member] | Customer Concentration Risk [Member]
ChemFree
Customer	21.00%	27.00%
ChemFree Customer C [Member] | Credit Concentration Risk [Member]
ChemFree
Customer	18.00%	20.00%
ChemFree Customer D [Member] | Customer Concentration Risk [Member]
ChemFree
Customer	7.00%	10.00%
ChemFree Customer D [Member] | Credit Concentration Risk [Member]
ChemFree
Customer	5.00%	12.00%