Note 10 - Loans Payable - Related Party - Loans Payable to Related Party (Details) (Parentheticals) - Loans Payable to Related Party [Member]	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Bill Chaaban, President of Cen Biotech [Member]
Interest Rate	10.00%	10.00%
Maturity Date	Dec. 31, 2018	Dec. 31, 2018
Jeff Thomas, Former Director of Creative Edge [Member]
Interest Rate	10.00%	10.00%
Maturity Date	Dec. 31, 2018	Dec. 31, 2018
R&D Labs Canada, Inc [Member]
Interest Rate	8.00%	8.00%
Maturity Date	Oct. 02, 2019	Oct. 02, 2019