Note J - Industry Segment Data - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2024
Net Sales	$ 94,074	$ 115,973	$ 315,384	$ 384,019
Operating profit (loss)	(1,187)	6,173	(2,809)	17,585
Gain (loss) on economic hedges of risk	264	(4,126)	5,833	706
Interest expense	(632)	(790)	(2,182)	(2,135)
Other income	3	1	3	17
TOTAL EARNINGS (LOSS) BEFORE INCOME TAXES	(1,552)	1,258	845	16,173
Identifiable assets	210,252		210,252		$ 230,019
Flat-roll [Member]
Net Sales	86,144	106,424	286,910	352,148
Tubular [Member]
Net Sales	7,930	9,549	28,474	31,871
Operating Segments [Member]
Operating profit (loss)	1,061	8,578	4,629	25,814
Identifiable assets	207,452		207,452		225,386
Operating Segments [Member] | Flat-roll [Member]
Net Sales	86,144	106,424	286,910	352,148
Operating profit (loss)	1,295	8,694	6,630	23,650
Identifiable assets	193,538		193,538		205,797
Operating Segments [Member] | Tubular [Member]
Net Sales	7,930	9,549	28,474	31,871
Operating profit (loss)	(234)	(116)	(2,001)	2,164
Identifiable assets	13,914		13,914		19,589
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
General corporate expenses	(2,248)	$ (2,405)	(7,438)	$ (8,229)
Identifiable assets	$ 2,800		$ 2,800		$ 4,633