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Note H - Revenue (Tables)
3 Months Ended
Jun. 30, 2018
Notes Tables  
Disaggregation of Revenue [Table Text Block]
   
Three Months Ended June 30,
 
 
 
2018
   
2017
 
Coil Segment:
               
Prime Coil
   
24,776,031
     
14,275,590
 
Non-standard Coil
   
6,110,458
     
3,368,604
 
Customer Owned Coil
   
242,711
     
365,641
 
     
31,129,200
     
18,009,835
 
Tubular Segment:
               
Manufactured Pipe
   
10,955,387
     
3,333,434
 
Mill Reject Pipe
   
5,420,861
     
1,221,936
 
Pipe Finishing Services
   
687,870
     
518,064
 
     
17,064,118
     
5,073,434