Note 15 - Federal and State Income Taxes - The Change in Deferred Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Federal and State Income Taxes
Provision for income taxes	$ (946)	$ (4,682)	$ 15,272
Statement of stockholders' equity- Other comprehensive income (loss)	3,192	(22,066)	(122)
Total	$ 2,246	$ (26,748)	$ 15,150