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Note 11 - Segment Information (Details) - Segment Reporting Information by Capital Expenditure (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Capital expenditures |  |  |  |
Capital expenditures | $ 2,090 | $ 8,849 | $ 7,214 | $ 12,628
Flat Products [Member] |  |  |  |
Capital expenditures |  |  |  |
Capital expenditures | 1,631 | 1,541 | 4,861 | 2,937
Tubular and Pipe Products [Member] |  |  |  |
Capital expenditures |  |  |  |
Capital expenditures | 459 | 7,308 | 2,332 | 9,691
Corporate Segment [Member] |  |  |  |
Capital expenditures |  |  |  |
Capital expenditures |  |  | $ 21 |

X
- Definition Expenses incurred during the reporting period regarding the purchases of fixed assets. + References No definition available. + Details
Name: | zeus_CapitalExpenditures
Namespace Prefix: | zeus_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | zeus_CapitalExpendituresAbstract
Namespace Prefix: | zeus_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration