Note 11 - Commitments (Details Textual)	3 Months Ended		12 Months Ended
	Mar. 31, 2021 USD ($) m²	Mar. 31, 2020 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2014 GBP (£)	Dec. 31, 2020	Mar. 31, 2019 ft²
Operating Lease, Expense	$ 32,419	$ 25,873
Royalty Expense	$ 8,814	$ 16,882
Executive Chairman [Member]
Consulting Agreement, Monthly Payment, Percentage			2.50%	2.50%
Executive Chairman [Member] | Minimum [Member]
Consulting Agreement, Monthly Payment			$ 11,000
Executive Chairman [Member] | Maximum [Member]
Consulting Agreement, Monthly Payment			$ 25,000
Chief Executive Officer [Member]
Consulting Agreement, Monthly Payment, Percentage			2.50%	2.50%
Consulting Agreement, Monthly Payment | £				£ 5,000
Chief Executive Officer [Member] | Minimum [Member]
Consulting Agreement, Monthly Payment			$ 7,500
Chief Executive Officer [Member] | Maximum [Member]
Consulting Agreement, Monthly Payment			$ 25,000
Facility in Vancouver, Canada [Member]
Lessee, Operating Lease, Term of Contract (Year)						5 years
Lessee, Operating Lease, Area of Property (Square Foot) | ft²						1,459
Netanya, Israel Lease [Member]
Lessee, Operating Lease, Term of Contract (Year)					1 year
Lessee, Operating Lease, Area of Property (Square Foot) | m²	190