Note 18 - Supplemental Cash Flow Information - Supplemental Cash Flow (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Interest paid	$ 13,302	$ 17,501	$ 7,930
Federal, state, and local income taxes paid, net	6,656	1,930	8,638
Change in contract receivables, net	(927)	1,062	4,108
Change in contract liabilities, net	927	(1,062)	(4,520)
Property, plant, and equipment purchases in accounts payable	$ 881	$ 976	$ 2,191