Note K - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Net Sales	$ 94,074	$ 115,973	$ 315,384	$ 384,019
Flat-roll [Member]
Net Sales	86,144	106,424	286,910	352,148
Flat-roll [Member] | Prime Coil [Member]
Net Sales	85,131	105,377	283,197	348,545
Flat-roll [Member] | Customer Owned [Member]
Net Sales	1,013	1,047	3,713	3,603
Tubular [Member]
Net Sales	7,930	9,549	28,474	31,871
Tubular [Member] | Manufactured Pipe [Member]
Net Sales	$ 7,930	$ 9,549	$ 28,474	$ 31,871