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Note C - Inventories (Tables)
9 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
December 31,
2016
 
 
March 31,
2016
 
Prime Coil Inventory
  $
7,029,796
    $
14,168,626
 
Non-Standard Coil Inventory
   
904,165
     
992,163
 
Tubular Raw Material
   
2,802,688
     
1,566,048
 
Tubular Finished Goods
   
23,826,857
     
25,212,291
 
    $
34,563,506
    $
41,939,128