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Note 3 - Revenue Recognition - Disaggregation of Revenues, Percentage (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Percentage of net sales	100.00%	100.00%	100.00%
Carbon Flat Products [Member]
Percentage of net sales	25.60%	26.30%	30.30%
Specialty Metals Flat Products [Member]
Percentage of net sales	57.10%	56.60%	53.00%
Tubular and Pipe Products [Member]
Percentage of net sales	17.30%	17.10%	16.70%
Hot Rolled Products [Member]
Percentage of net sales	28.00%	28.80%	29.80%
Hot Rolled Products [Member] | Carbon Flat Products [Member]
Percentage of net sales	28.00%	0.00%	0.00%
Hot Rolled Products [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	0.00%	28.80%	29.80%
Hot Rolled Products [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%
Plate Products [Member]
Percentage of net sales	11.20%	12.90%	13.30%
Plate Products [Member] | Carbon Flat Products [Member]
Percentage of net sales	11.20%	0.00%	0.00%
Plate Products [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	0.00%	12.90%	13.30%
Plate Products [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%
Cold Rolled Products [Member]
Percentage of net sales	4.30%	4.00%	4.70%
Cold Rolled Products [Member] | Carbon Flat Products [Member]
Percentage of net sales	4.30%	0.00%	0.00%
Cold Rolled Products [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	0.00%	4.00%	4.70%
Cold Rolled Products [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%
Coated Products [Member]
Percentage of net sales	12.40%	10.30%	4.50%
Coated Products [Member] | Carbon Flat Products [Member]
Percentage of net sales	12.40%	0.00%	0.00%
Coated Products [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	0.00%	10.30%	4.50%
Coated Products [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%
Specialty [Member]
Percentage of net sales	25.60%	26.30%	30.30%
Specialty [Member] | Carbon Flat Products [Member]
Percentage of net sales	0.00%	26.30%	30.30%
Specialty [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	25.60%	0.00%	0.00%
Specialty [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%
Pipe and Tube Products [Member]
Percentage of net sales	17.30%	17.10%	16.70%
Pipe and Tube Products [Member] | Carbon Flat Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%
Pipe and Tube Products [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%
Pipe and Tube Products [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	17.30%	17.10%	16.70%
Product and Service, Other [Member]
Percentage of net sales	1.20%	0.60%	0.70%
Product and Service, Other [Member] | Carbon Flat Products [Member]
Percentage of net sales	1.20%	0.00%	0.00%
Product and Service, Other [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	0.00%	0.60%	0.70%
Product and Service, Other [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	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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Period Type:

X

- Details

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Balance Type:
Period Type:

X

- Details

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X

- Details

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Period Type:

X

- Details

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X

- Details

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X

- Details

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Period Type:

X

- Details

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X

- Details

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Period Type:

X

- Details

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Period Type: