Note K - Revenue - Disaggregation of Revenue (Details) - USD ($)	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Net Sales	$ 65,916,439	$ 23,524,600
Coil [Member]
Net Sales	52,694,730	15,432,784
Coil [Member] | Prime Coil [Member]
Net Sales	49,751,884	13,307,468
Coil [Member] | Secondary Coil [Member]
Net Sales	2,823,203	1,941,003
Coil [Member] | Customer Owned [Member]
Net Sales	119,643	184,313
Tubular [Member]
Net Sales	13,221,709	8,091,816
Tubular [Member] | Manufactured Pipe [Member]
Net Sales	9,606,810	7,161,850
Tubular [Member] | Mill Reject Pipe [Member]
Net Sales	$ 3,614,899	$ 929,966