Note 3 - Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

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

			Weighted Average
			Exercise Price
	Options		Per Option
Options outstanding, December 31, 2022		410,615	$	3.50
Granted to employees and non-employee directors		46,400		4.23
Exercised		134,250		3.27
Canceled/expired/forfeited		13,333		3.61
Options outstanding, September 30, 2023		309,432		3.70
Options exercisable, September 30, 2023		253,231		3.59