Note 8 - Commitments and Contingencies (Details Textual) - President and Chief Executive Officer [Member]	May 02, 2017 USD ($) $ / shares shares
Employment Agreement, Annual Base Compensation	$ 288,603
Employment Agreement, Car Allowance Monthly	$ 800
Employment Agreement, Option, Number of Shares, Expected to Grant | shares	3,731,322
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Employment Agreement, Common Stock, Expect to Grant, Subject to Lock-Up Agreement | shares	1,500,000
Employment Agreement, Lock-up Agreement, Successful Commercialization, Minimum Cash Receipt	$ 3,000,000
Employment Agreement, Lock-up Agreement, Minimum Revenue Recognized	$ 3,000,000
Employment Agreement, Term	5 years
Non-Qualified Stock Option [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares	$ 0.45
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years