Note 6 - Equity and Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

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

Stock Options – 2016 Omnibus Plan	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term
Outstanding at January 1, 2023		3,376,667	$	0.64		6.70
Granted		-		-		-
Exercised		-		-		-
Forfeited or expired		-		-		-
Outstanding at March 31, 2023		3,376,667	$	0.64		6.45
Exercisable at March 31, 2023		2,252,778	$	0.57		5.16