Note 18 - Net Income Per Share - Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net income	$ 29,360	$ 27,092	$ 82,845	$ 83,804
Weighted average shares outstanding - basic (in shares)	29,299	29,223	29,277	29,208
Dilutive securities (in shares)	146	113	119	139
Weighted average shares outstanding- diluted (in shares)	29,445	29,336	29,396	29,347
Net income per share - basic (in dollars per share)	$ 1	$ 0.93	$ 2.83	$ 2.87
Net income per share - diluted (in dollars per share)	$ 1	$ 0.92	$ 2.82	$ 2.86