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Note 3 - Revenue Recognition - Disaggregation of Revenues, Percentage (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue percent	100.00%	100.00%	100.00%	100.00%
Specialty [Member]
Revenue percent	25.80%	32.00%	27.40%	30.30%
Hot Rolled Products [Member]
Revenue percent	30.60%	30.20%	28.90%	30.70%
Tube Products [Member]
Revenue percent	16.80%	15.70%	16.80%	16.30%
Plate Products [Member]
Revenue percent	12.60%	12.80%	13.10%	13.00%
Coated Products [Member]
Revenue percent	5.60%	4.20%	5.00%	4.60%
Cold Rolled Products [Member]
Revenue percent	4.10%	5.00%	3.80%	5.00%
Product and Service, Other [Member]
Revenue percent	4.50%	0.10%	5.00%	0.10%
Specialty Metals Flat Products [Member]
Revenue percent	25.80%	32.00%	27.40%	30.30%
Specialty Metals Flat Products [Member] | Specialty [Member]
Revenue percent	25.80%	32.00%	27.40%	30.30%
Specialty Metals Flat Products [Member] | Hot Rolled Products [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Specialty Metals Flat Products [Member] | Tube Products [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Specialty Metals Flat Products [Member] | Plate Products [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Specialty Metals Flat Products [Member] | Coated Products [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Specialty Metals Flat Products [Member] | Cold Rolled Products [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Specialty Metals Flat Products [Member] | Product and Service, Other [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Carbon Flat Products [Member]
Revenue percent	57.40%	52.30%	55.80%	53.40%
Carbon Flat Products [Member] | Specialty [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Carbon Flat Products [Member] | Hot Rolled Products [Member]
Revenue percent	30.60%	30.20%	28.90%	30.70%
Carbon Flat Products [Member] | Tube Products [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Carbon Flat Products [Member] | Plate Products [Member]
Revenue percent	12.60%	12.80%	13.10%	13.00%
Carbon Flat Products [Member] | Coated Products [Member]
Revenue percent	5.60%		5.00%
Carbon Flat Products [Member] | Cold Rolled Products [Member]
Revenue percent		5.00%		5.00%
Carbon Flat Products [Member] | Product and Service, Other [Member]
Revenue percent	4.50%	0.10%	5.00%	0.10%
Tubular and Pipe Products [Member]
Revenue percent	16.80%	15.70%	16.80%	16.30%
Tubular and Pipe Products [Member] | Specialty [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Tubular and Pipe Products [Member] | Hot Rolled Products [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Tubular and Pipe Products [Member] | Tube Products [Member]
Revenue percent	16.80%	15.70%	16.80%	16.30%
Tubular and Pipe Products [Member] | Plate Products [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Tubular and Pipe Products [Member] | Coated Products [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Tubular and Pipe Products [Member] | Cold Rolled Products [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%
Tubular and Pipe Products [Member] | Product and Service, Other [Member]
Revenue percent	0.00%	0.00%	0.00%	0.00%

X

- Definition

Percentage of revenue, including tax collected from customer, from satisfaction of performance obligation by transferring promised good or service to customer.

+ References

No definition available.

+ Details

Name:	zeus_RevenueFromContractWithCustomerIncludingAssessedTaxPercentage
Namespace Prefix:	zeus_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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X

- Details

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X

- Details

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X

- Details

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X

- Details

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- Details

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- Details

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X

- Details

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- Details

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X

- Details

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Period Type: