Note K - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Net Sales	$ 137,298	$ 161,803
Coil [Member]
Net Sales	125,197	142,877
Coil [Member] | Prime Coil [Member]
Net Sales	123,822	140,981
Coil [Member] | Secondary Coil [Member]
Net Sales	151	1,531
Coil [Member] | Customer Owned [Member]
Net Sales	1,224	365
Tubular [Member]
Net Sales	12,101	18,926
Tubular [Member] | Manufactured Pipe [Member]
Net Sales	$ 12,101	$ 18,926