Note K - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Net Sales	$ 115,973	$ 111,860	$ 384,019	$ 423,356
Coil [Member]
Net Sales	106,424	100,231	352,148	372,830
Coil [Member] | Prime Coil [Member]
Net Sales	103,748	99,100	346,405	368,583
Coil [Member] | Secondary Coil [Member]
Net Sales	1,629	796	2,140	3,219
Coil [Member] | Customer Owned [Member]
Net Sales	1,047	335	3,603	1,028
Tubular [Member]
Net Sales	9,549	11,629	31,871	50,526
Tubular [Member] | Manufactured Pipe [Member]
Net Sales	$ 9,549	$ 11,629	$ 31,871	$ 50,526