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Note 1 - Basis of Presentation (Details Textual) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)
Accounts Receivable, Net [Member]
Employee Retention Credit Receivable	$ 4.0	$ 4.0
Employee Retention Credit [Member]
Income From Tax Credits	4.0	4.0
Employee Retention Credit [Member] | Warehouse and Processing [Member]
Income From Tax Credits	2.0	2.0
Employee Retention Credit [Member] | General and Administrative Expense [Member]
Income From Tax Credits	1.2	1.2
Employee Retention Credit [Member] | Distribution Expenses [Member]
Income From Tax Credits	0.2	0.2
Employee Retention Credit [Member] | Selling and Marketing Expense [Member]
Income From Tax Credits	$ 0.6	$ 0.6

X

- Definition

The amount of employee retention credit receivable.

+ References

No definition available.

+ Details

Name:	zeus_EmployeeRetentionCreditReceivable
Namespace Prefix:	zeus_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of income from tax credits.

+ References

No definition available.

+ Details

Name:	zeus_IncomeFromTaxCredits
Namespace Prefix:	zeus_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=zeus_AccountsReceivableNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TaxCreditCarryforwardAxis=zeus_EmployeeRetentionCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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