Note 13 - Stock Plans and Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

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

	Options Outstanding								Options Exercisable
	Options Outstanding		Weighted Average Exercise Price		Weighted Average Fair Value		Weighted Average Remaining Contractual Life (in years)		Options Exercisable		Weighted Average Exercise Price		Weighted Average Fair Value		Weighted Average Remaining Contractual Life (in years)
At January 1, 2022		6,301,500	$	0.06	$	0.06		3.98		6,301,500	$	0.06	$	0.06		3.98
At December 31, 2022		6,301,500	$	0.06	$	0.06		2.98		6,301,500	$	0.06	$	0.06		2.98