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Note C - Inventories (Tables)
6 Months Ended
Sep. 30, 2015
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
September 30,
2015
 
 
March 31,
2015
 
Prime Coil Inventory
  $ 11,147,315     $ 8,419,340  
Non-Standard Coil Inventory
    1,322,983       1,804,635  
Tubular Raw Material
    935,393       1,888,849  
Tubular Finished Goods
    27,011,277       28,737,842  
    $ 40,416,968     $ 40,850,666