Note 11 - Stock-based Compensation Plan - Stock Option Activity (Details)	3 Months Ended
	Mar. 31, 2024 $ / shares shares
Options outstanding, number of shares (in shares) | shares	505,006
Options outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 10.46
Granted, number of shares (in shares) | shares	165,364
Granted, weighted average exercise price (in dollars per share) | $ / shares	$ 11.33
Exercised, number of shares (in shares) | shares	(4,925)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 3.69
Canceled, number of shares (in shares) | shares	(23,401)
Canceled, weighted average exercise price (in dollars per share) | $ / shares	$ 10.27
Options outstanding, number of shares (in shares) | shares	642,044
Options outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 10.74