Note 13 - Income Taxes - Income Tax Expense (Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Domestic	$ 455,288	$ 502,141	$ 307,260
Foreign	6,773	7,186	6,423
Income before taxes	462,061	509,327	313,683
Current provision
Federal	87,270	93,942	47,475
State	16,864	16,516	10,759
Foreign	2,265
Total	106,399	112,981	58,234
Deferred provision (benefit)
Federal	7,617	7,975	13,809
State	505	(565)	(631)
Foreign	(521)	(3,149)	856
Total	7,601	4,261	14,034
Provision for income taxes	$ 114,000	$ 117,242	$ 72,268