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Note 9 - Derivative Instruments: (Tables)
9 Months Ended
Sep. 30, 2012
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]
   
Net Gain (Loss) Recognized
 
   
Three Months Ended
September 30,
   
Nine Months Ended
September 30,
 
   
2012
   
2011
   
2012
   
2011
 
(in thousands)
                       
Interest rate swap
  $ 7     $ (80 )   $ 23     $ (80 )
Nickel swaps
    245       (973 )     16       901  
Embedded customer derivatives
    (245 )     973       (16 )     (901 )
Total gain (loss)
  $ 7     $ (80 )   $ 23     $ (80 )