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Note 6 - Derivative Instruments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2015 | Jun. 30, 2012
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative, Fixed Interest Rate | 1.21% | 1.21% |
Cash Flow Hedging [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative, Fixed Interest Rate | 1.21% | 1.21% |
Nickel Swaps [Member] | Cost of Materials Sold [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net (in Dollars) | $ (823) | $ (823) |
Interest Rate Swap [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Long-term Line of Credit (in Dollars) | 35,700 | 35,700 |
Fixed Rate Interest Hedge, Notional Monthly Decrease (in Dollars) |  | 729 |
Interest Rate Swap [Member] | Cash Flow Hedging [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Long-term Line of Credit (in Dollars) | $ 35,700 | 35,700 |
Fixed Rate Interest Hedge, Notional Monthly Decrease (in Dollars) |  | $ 729 |
ABL Credit Facility [Member] | Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Long-term Line of Credit (in Dollars) |  |  | $ 53,200
Minimum [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative Premium Rate | 1.75% | 1.75% |
Minimum [Member] | Cash Flow Hedging [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative Premium Rate | 1.75% | 1.75% |
Minimum [Member] | Nickel Swaps [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative, Remaining Maturity |  | 1 month |
Minimum [Member] | Carbon Swaps [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative, Remaining Maturity |  | 1 month |
Minimum [Member] | Prepaid Expenses and Other Current Assets [Member] | Carbon Swaps [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative, Remaining Maturity |  | 1 month |
Maximum [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative Premium Rate | 2.25% | 2.25% |
Maximum [Member] | Cash Flow Hedging [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative Premium Rate | 1.25% | 1.25% |
Maximum [Member] | Nickel Swaps [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative, Remaining Maturity |  | 11 months |
Maximum [Member] | Carbon Swaps [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative, Remaining Maturity |  | 6 months |
Maximum [Member] | Prepaid Expenses and Other Current Assets [Member] | Carbon Swaps [Member] |  |  |
Note 6 - Derivative Instruments (Details) [Line Items] |  |  |
Derivative, Remaining Maturity |  | 6 months |

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- Definition The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1),(2) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 + Details
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- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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