Note 10 - Shareholders' Equity - Restricted Stock Activity (Details) - Restricted Stock [Member]	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Non-vested restricted stock (in shares) | shares	687,000
Non-vested restricted stock, weighted average grant date fair value (in dollars per share) | $ / shares	$ 3.79
Granted (in shares) | shares	936,434
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 2.18
Vested (in shares) | shares	(544,198)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 3.3
Modifications (accelerated vesting) (in shares) | shares	(164,000)
Modifications (accelerated vesting) (in dollars per share) | $ / shares	$ 2.85
Forfeited (in shares) | shares	(60,000)
Forfeited (in dollars per share) | $ / shares	$ 2.3
Non-vested restricted stock (in shares) | shares	855,236
Non-vested restricted stock, weighted average grant date fair value (in dollars per share) | $ / shares	$ 2.63