Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2016

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	March 31
	2016		2015
Prime coil inventory	$	14,168,626	$	8,419,340
Non-standard coil inventory		992,163		1,804,635
Tubular raw material		1,566,048		1,888,849
Tubular finished goods		25,212,291		28,737,842
	$	41,939,128	$	40,850,666

Property, Plant and Equipment [Table Text Block]

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