Note 10 - Earnings Per Share - Computation of Basic and Diluted Earnings (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Basic	$ 11,319	$ 1,410
Basic (in shares)	1,806,687	1,888,895
Basic (in dollars per share)	$ 6.27	$ 0.75
Options (in shares)	759,264
Diluted	$ 11,319	$ 1,410
Diluted (in shares)	2,565,951	2,647,220
Diluted (in dollars per share)	$ 4.41	$ 0.53