Note 8 - Long Term Convertible Notes Related Party - Long Term Convertible Notes Related Party (Details) (Parentheticals) - Long-term Convertible Note Related Party [Member] - Bill Chaaban, President of Cen Biotech [Member]	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Interest Rate	12.00%	12.00%
Debt Instrument, Convertible, Number of Equity Instruments	871,576	871,576
Maturity Date	Aug. 17, 2018	Aug. 17, 2018