Note K - Revenue - Disaggregation of Revenue (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Net Sales	$ 51,655,943	$ 28,502,049	$ 210,143,277	$ 76,888,329
Coil [Member]
Net Sales	41,795,586	21,672,147	172,814,243	55,561,017
Coil [Member] | Prime Coil [Member]
Net Sales	39,588,438	19,541,188	164,096,180	49,897,886
Coil [Member] | Secondary Coil [Member]
Net Sales	1,852,272	1,886,099	7,704,262	5,028,237
Coil [Member] | Customer Owned [Member]
Net Sales	354,876	244,860	1,013,801	634,894
Tubular [Member]
Net Sales	9,860,357	6,829,902	37,329,034	21,327,312
Tubular [Member] | Manufactured Pipe [Member]
Net Sales	6,906,450	5,082,314	27,889,886	17,540,498
Tubular [Member] | Mill Reject Pipe [Member]
Net Sales	$ 2,953,907	$ 1,747,588	$ 9,439,148	$ 3,786,814