Note 13 - Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income tax expense at U.S. federal statutory rate	$ 13,728	$ 11,105	$ 24,795	$ 33,414
Limited tax benefit due to stock-based compensation	861	2,211	5,297	2,951
State deferred income taxes	709	753	1,604	1,863
Other, net	140	31	289	23
Provision for income taxes	$ 15,438	$ 14,100	$ 31,985	$ 38,251
Effective income tax rate	23.60%	26.70%	27.10%	24.00%