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Note 10 - Fair Value of Financial Instruments: (Detail) - Fair Value Heirarchy (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Assets:    
Embedded customer derivatives $ 229 $ 55
Liabilities:    
Nickel swaps 284 55
Interest rate swap 476 492
Fixed interest rate hedge 655  
Total liabilities at fair value 1,415 547
Fair Value, Inputs, Level 1 [Member]
    
Assets:    
Embedded customer derivatives 0 0
Liabilities:    
Nickel swaps 0 0
Interest rate swap 0 0
Total liabilities at fair value 0 0
Fair Value, Inputs, Level 2 [Member]
    
Assets:    
Embedded customer derivatives 229 55
Liabilities:    
Nickel swaps 284 55
Interest rate swap 476 492
Fixed interest rate hedge 655  
Total liabilities at fair value 1,415 547
Fair Value, Inputs, Level 3 [Member]
    
Assets:    
Embedded customer derivatives 0 0
Liabilities:    
Nickel swaps 0 0
Interest rate swap 0 0
Total liabilities at fair value $ 0 $ 0