Note I - Stock Option Plans - Schedule of Restricted Stock (Details) - Restricted Stock [Member]	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Non-vested as January 1, 2023 (in shares)	435,293
Non-vested as January 1, 2023 (in dollars per share) | $ / shares	$ 1.18
Granted, Shares (in shares)	617,978
Granted, Weighted Average Grant-Date Fair Value per Award (in dollars per share) | $ / shares	$ 0.89
Vested, Shares (in shares)	(694,658)
Cancelled, Shares (in shares)	(30,676)
Non-vested, Shares (in shares)	327,937
Non-vested, Weighted Average Grant-Date Fair Value per Award (in dollars per share) | $ / shares	$ 0.91