Note 10 - Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2020

Notes Tables

Share-based Payment Arrangement, Option, Activity [Table Text Block]

	Number of options			Weighted average exercise price
Outstanding, December 31, 2019		3,200,750		$	0.45
Granted		2,745,000			-
Exercised		-			-
Cancelled		(70,000	)		(0.42	)
Outstanding June 30, 2020		5,875,750		$	0.45

Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

Exercise prices per share		Number outstanding		Number exercisable		Expiry date
$	0.33		2,745,000		60,000	June 30, 2025
	0.42		620,000		620,000	December 20, 2021
	0.42		522,750		452,450	November 8, 2022
	0.42		713,000		713,000	June 4, 2023
	0.50		1,275,000		1,275,000	June 4, 2023
			5,875,750		3,120,450