Note 11 - 2018 Stock Option and Stock Award Plan (Details) - 2018 Stock Option and Stock Award Plan - USD ($)		1 Months Ended	3 Months Ended
	Jul. 01, 2018	Feb. 20, 2018	Mar. 31, 2018
Number of Shares Authorized			1,500,000
Shares available for issuance			1,220,000
Date of Vest	Jul. 01, 2018	Jul. 01, 2018
Option vested	45,000	235,000
Stock options exercise price	$ 2.50		$ 2.50
Fair value of option vested	$ 106,665	$ 557,028
Fair Value Assumptions, Method Used	Black-Scholes option-pricing model	Black-Scholes option-pricing model
Risk-free interest rate	2.65%	2.65%
Estimated volatility	119.27%	119.27%
Dividend yield	0.00%	0.00%
Expected life of the options	8 years	10 years
Allocated Share-based Compensation Expense			$ 140,926
Unrecognized expense for unvested options			$ 583,104
Non-vested shares			325,000
Deferred Compensation Arrangement with Individual, Requisite Service Period			3 years 7 months 10 days
NonEmployee Stock Option
Date of Vest			Jul. 01, 2018
Option vested			45,000
Stock options exercise price			$ 2.50
Fair value of option vested			$ 81,659
Fair Value Assumptions, Method Used			Black-Scholes option-pricing model
Risk-free interest rate			2.77%
Estimated volatility			141.02%
Dividend yield			0.00%
Expected life of the options			8 years