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Note 8 - Commitments and Contingencies (Details Textual) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016
Cost of Materials Sold [Member]
Litigation Settlement, Expense	$ 1.7	$ 1.7

X

- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=zeus_CostOfMaterialsSoldMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: