Note 4 - Net Income Per Share - Reconciliation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Net income	$ 1,551	$ 600	$ 793	$ 4,512
Weighted average shares outstanding - basic (in shares)	14,813,984	16,221,073	15,206,819	16,124,553
Dilutive common stock equivalents (in shares)	287,958	548,224	366,873	486,822
Weighted average shares outstanding - diluted (in shares)	15,101,942	16,769,297	15,573,692	16,611,375
Basic (in dollars per share)	$ 0.1	$ 0.04	$ 0.05	$ 0.28
Diluted (in dollars per share)	$ 0.1	$ 0.04	$ 0.05	$ 0.27