Note 18 - Segment Information - Segment Reporting Information by Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net sales	$ 2,158,163	$ 2,559,990	$ 2,312,253
Depreciation and amortization	26,443	19,738	20,316
Total operating income	77,671	133,747	172,466
Other loss, net	78	45	36
Income before interest and income taxes	77,593	133,702	172,430
Interest and other expense on debt	16,006	10,080	7,631
Income before income taxes	61,587	123,622	164,799
Specialty Metals Flat Products [Member]
Net sales	567,728	776,022	585,751
Depreciation and amortization	3,929	4,060	3,692
Total operating income	22,884	93,662	70,544
Carbon Flat Products [Member]
Net sales	1,221,093	1,356,605	1,344,150
Depreciation and amortization	14,762	10,695	11,286
Total operating income	34,582	25,015	110,074
Tubular and Pipe Products [Member]
Net sales	369,342	427,363	382,352
Depreciation and amortization	7,682	4,913	5,267
Total operating income	40,692	34,856	7,353
Corporate Segment [Member]
Depreciation and amortization	70	70	71
Total operating income	$ (20,487)	$ (19,786)	$ (15,505)