Note 10 - Convertible Notes - Related Parties - Convertible Notes Payable to Related Parties (Details) (Parentheticals)	6 Months Ended	12 Months Ended
Jun. 30, 2018	Dec. 31, 2017
Director, Alex Tarrabain [Member]
Maturing Dates	Aug. 16, 2018
Joseph Byrne [Member]
Maturing Dates	Aug. 16, 2018
Convertible Debt Payable to Related Party [Member]
Conversion Rights	1,693,946
Convertible Debt Payable to Related Party [Member] \| Bill Chaaban, President of Cen Biotech [Member]
Interest Rate	12.00%	12.00%
Conversion Rights	867,576	867,576
Maturing Dates	Aug. 17, 2020	Aug. 17, 2020
Convertible Debt Payable to Related Party [Member] \| Director, Harold Aubrey de Lavenu [Member]
Interest Rate	5.00%	5.00%
Conversion Rights	656,250	656,250
Maturing Dates	Between September 2018 and Feb 2019	Between September 2018 and Feb 2019
Convertible Debt Payable to Related Party [Member] \| Director, Alex Tarrabain [Member]
Interest Rate	5.00%	5.00%
Conversion Rights	30,000	30,000
Maturing Dates	Oct. 26, 2018	Oct. 26, 2018
Convertible Debt Payable to Related Party [Member] \| Joseph Byrne [Member]
Interest Rate	12.00%	12.00%
Conversion Rights	140,120	140,120
Maturing Dates	Aug. 17, 2020	Aug. 17, 2020

The maturity various date range of a debt instrument.

No definition available.

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- Definition

The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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