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Note 6 - Derivative Instruments (Details) (USD $)
6 Months Ended 6 Months Ended
Jun. 30, 2014
Nickel Swaps [Member]
Minimum [Member]
Jun. 30, 2014
Nickel Swaps [Member]
Maximum [Member]
Jun. 30, 2014
Carbon Swaps [Member]
Minimum [Member]
Jun. 30, 2014
Carbon Swaps [Member]
Maximum [Member]
Jun. 30, 2014
Interest Rate Swap [Member]
Jun. 30, 2012
Term Loan [Member]
London Interbank Offered Rate (LIBOR) [Member]
ABL Credit Facility [Member]
Jun. 30, 2014
Interest Rate Swap [Member]
Note 6 - Derivative Instruments (Details) [Line Items]              
Derivative, Remaining Maturity 1 month 23 months 1 month 6 months      
Long-term Line of Credit (in Dollars)           $ 53,200,000 $ 44,500,000
Fixed Rate Interest Hedge, Notional Monthly Decrease (in Dollars)         $ 729,000   $ 729,000