Note 17 - Segment Information - Segment Reporting Information by Capital Expenditures and Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Capital expenditures	$ 19,854	$ 11,011	$ 9,803
Assets	891,627	1,023,572
Flat Products Segment [Member]
Capital expenditures	15,299	8,797	7,589
Assets	631,607	777,074
Tubular and Pipe Products [Member]
Capital expenditures	4,555	2,214	2,214
Assets	258,412	245,962
Corporate Segment [Member]
Capital expenditures	0	0	$ 0
Assets	$ 1,608	$ 536