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Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items] |  |
Derivative | $ (153) | $ (42)
Interest Rate Swap [Member] |  |
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items] |  |
Derivative | (29) | (42)
Fixed Interest Rate Swap [Member] |  |
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items] |  |
Derivative | (124) |
Nickel Swaps [Member] |  |
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items] |  |
Derivative | 655 | 77
Embedded Customer Derivatives [Member] |  |
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items] |  |
Derivative | $ (655) | $ (77)

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- Definition Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period. + 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 (a) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: | zeus_
Data Type: | xbrli:stringItemType
Balance Type: | na
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