Note 3 - Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

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

				Weighted
				Average
				Exercise Price
	Options			Per Option
Options outstanding, December 31, 2018		1,022,913		$	2.69
Granted to employees and non-employee directors		370,000			3.59
Exercised		(49,833	)		1.90
Canceled/expired/forfeited		-			0.00
Options outstanding, September 30, 2019		1,343,080			2.96
Options exercisable, September 30, 2019		676,580			2.44