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Note 14 - Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Note 14 - Commitments and Contingencies (Details) [Line Items] |  |  |
Operating Leases, Rent Expense | $ 7,500 | $ 7,700 | $ 6,500
Collective Bargaining Arrangements | 10 |  |
Workforce Subject to Collective Bargaining Arrangements [Member] |  |  |
Note 14 - Commitments and Contingencies (Details) [Line Items] |  |  |
Entity Number of Employees | 333 |  |

X
- Definition Number of persons employed by the Entity + References No definition available. + Details
Name: | dei_EntityNumberOfEmployees
Namespace Prefix: | dei_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of collective bargaining arrangements. + References No definition available. + Details
Name: | zeus_CollectiveBargainingArrangements
Namespace Prefix: | zeus_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | zeus_Note14CommitmentsandContingenciesDetailsLineItems
Namespace Prefix: | zeus_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration