Note 4 - Net Income Per Share - Reconciliation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Net income	$ 12,004	$ 8,772
Weighted average shares outstanding - basic (in shares)	16,008,015	15,968,199
Dilutive common stock equivalents (in shares)	496,369	191,109
Weighted average shares outstanding - diluted (in shares)	16,504,384	16,159,308
Basic (in dollars per share)	$ 0.75	$ 0.55
Diluted (in dollars per share)	$ 0.73	$ 0.54