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Note 6 - Derivative Instruments (Tables)
3 Months Ended
Mar. 31, 2013
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]
   
Net Gain (Loss) Recognized
For the Three Months Ended March 31,
 
   
2013
   
2012
 
(in thousands)
           
Interest rate swap (CTI)
  $ (42 )   $ 22  
Nickel swaps
    77       65  
Embedded customer derivatives
    (77 )     (65 )
Total gain (loss)
  $ (42 )   $ 22