Note 6 - Stockholders' Equity - Schedule of Restricted Stock (Details) - Restricted Stock [Member]	6 Months Ended
	Jun. 30, 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)	(540,164)
Vested, Weighted Average Grant-Date Fair Value per Award (in dollars per share) | $ / shares	$ 0
Cancelled, , Weighted Average Grant-Date Fair Value per Award (in shares)	0
Non-vested as June 30, 2023 (in shares)	513,107
Non-vested as June 30, 2023 (in dollars per share) | $ / shares	$ 0.96