Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2022

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	March 31,
	2022		2021
Prime coil inventory	$	50,482,022	$	23,079,012
Non-standard coil inventory		1,063,374		1,419,055
Tubular raw material		9,049,598		2,607,197
Tubular finished goods		7,351,128		8,910,829
	$	67,946,122	$	36,016,093

Property, Plant and Equipment [Table Text Block]

Buildings (in years)	20
Machinery and equipment (in years)	10 to 15
Yard improvements (in years)	5 to 15
Loaders and other rolling stock (in years)	5 to 15