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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
	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)

X

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

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Namespace Prefix:	zeus_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration