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Note 14 - Commitments and Contingencies (Details Textual)	Dec. 31, 2021
Entity Number of Employees	182
Collective Bargaining Arrangements	7

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

Total number of collective bargaining units.

+ References

No definition available.

+ Details

Name:	zeus_CollectiveBargainingArrangements
Namespace Prefix:	zeus_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant