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Note C - Inventories (Tables)
9 Months Ended
Dec. 31, 2015
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
December 31,
2015
 
 
March 31,
2015
 
Prime Coil Inventory
  $ 15,208,352     $ 8,419,340  
Non-Standard Coil Inventory
    1,062,232       1,804,635  
Tubular Raw Material
    1,526,965       1,888,849  
Tubular Finished Goods
    25,372,096       28,737,842  
    $ 43,169,645     $ 40,850,666