Note 8 - Goodwill and Intangible Assets - Goodwill, by Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Balance	$ 10,496	$ 5,123
Acquisitions	0	5,373
Impairments	0	0
Balance	10,496	10,496
Carbon Flat Products [Member]
Balance	1,065	1,065
Acquisitions	0	0
Impairments	0	0
Balance	1,065	1,065
Specialty Metals Flat Products [Member]
Balance	9,431	4,058
Acquisitions	0	5,373
Impairments	0	0
Balance	9,431	9,431
Tubular and Pipe Products [Member]
Balance	0	0
Acquisitions	0	0
Impairments	0	0
Balance	$ 0	$ 0