Note 3 - Shareholders' Equity - Restricted Stock Activity (Details) - Restricted Stock [Member]	3 Months Ended
	Mar. 31, 2024 $ / shares shares
Outstanding, shares (in shares) | shares	235,172
Outstanding, weighted average grant date price (in dollars per share) | $ / shares	$ 4.21
Granted to employees and directors, shares (in shares) | shares	10,715
Granted to employees and directors, weighted average grant date price (in dollars per share) | $ / shares	$ 5.32
Vested, shares (in shares) | shares	(8,172)
Vested, weighted average grant date price (in dollars per share) | $ / shares	$ 4.02
Outstanding, shares (in shares) | shares	237,715
Outstanding, weighted average grant date price (in dollars per share) | $ / shares	$ 4.12