Note 9 - Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 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		-			-
Exercised		-			-
Cancelled		(70,000	)		(0.42	)
Outstanding March 31, 2020		3,130,750		$	0.45

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

Range of exercise prices per share		Number outstanding		Number exercisable		Expiry date
$	0.42		620,000		620,000	December 20, 2021
	0.42		522,750		427,250	November 8, 2022
	0.42		713,000		713,000	June 4, 2023
	0.50		1,275,000		1,275,000	June 4, 2023
			3,130,750		3,035,250