Summary of Inventory Values by Product Group (Detail) (USD $)	Dec. 31, 2012	Mar. 31, 2012
Schedule Of Inventory By Segment [Line Items]
Inventory, Net	$ 32,906,704	$ 36,753,680
Prime Coil Inventory
Schedule Of Inventory By Segment [Line Items]
Raw Materials	8,540,343	8,562,607
Non-Standard Coil Inventory
Schedule Of Inventory By Segment [Line Items]
Finished Goods	2,919,449	1,853,445
Tubular
Schedule Of Inventory By Segment [Line Items]
Raw Materials	2,283,486	6,859,871
Finished Goods	$ 19,163,426	$ 19,477,757