Note 8 - Net Income Per Share - Reconciliation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net income	$ 3,912	$ 888
Weighted average shares outstanding - basic (in shares)	16,028,032	15,882,994
Dilutive common stock equivalents (in shares)	425,420	235,335
Weighted average shares outstanding - diluted (in shares)	16,453,452	16,118,329
Basic (in dollars per share)	$ 0.24	$ 0.06
Diluted (in dollars per share)	$ 0.24	$ 0.06