Note I - Industry Segment Data - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2024
Net Sales	$ 114,551	$ 137,298
Operating profit (loss)	(1,398)	10,357
Gain on economic hedges of risk	5,375	430
Interest expense	(681)	(540)
Other income	3	6
TOTAL EARNINGS BEFORE INCOME TAXES	3,299	10,253
Identifiable assets	222,790		$ 230,019
Flat-roll [Member]
Net Sales	103,387	125,197
Tubular [Member]
Net Sales	11,164	12,101
Operating Segments [Member]
Operating profit (loss)	1,481	14,078
Identifiable assets	217,117		225,386
Operating Segments [Member] | Flat-roll [Member]
Net Sales	103,387	125,197
Operating profit (loss)	2,666	11,814
Identifiable assets	199,090		205,797
Operating Segments [Member] | Tubular [Member]
Net Sales	11,164	12,101
Operating profit (loss)	(1,185)	2,264
Identifiable assets	18,027		19,589
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
General corporate expenses	(2,879)	$ (3,721)
Identifiable assets	$ 5,673		$ 4,633