Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2024

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	March 31,
	2024		2023
Flat-Roll raw material	$	85,483	$	63,113
Flat-Roll finished goods		17,030		13,082
Tubular raw material		4,185		5,193
Tubular finished goods		9,106		4,858
	$	115,804	$	86,246

Property, Plant and Equipment [Table Text Block]

Buildings (in years)	20 to 40
Machinery and equipment (in years)	10 to 35
Yard improvements (in years)	5 to 15
Loaders and other rolling stock (in years)	5 to 15