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Note 11 - Segment Information (Details) - Segment Reporting Information by Capital Expenditure (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Capital expenditures |  |  |  |
Capital expenditures | $ 2,783 | $ 2,065 | $ 5,124 | $ 3,779
Flat Products [Member] |  |  |  |
Capital expenditures |  |  |  |
Capital expenditures | 2,214 | 717 | 3,230 | 1,396
Tubular and Pipe Products [Member] |  |  |  |
Capital expenditures |  |  |  |
Capital expenditures | 552 | 1,348 | 1,873 | 2,383
Corporate Segment [Member] |  |  |  |
Capital expenditures |  |  |  |
Capital expenditures | $ 17 |  | $ 21 |

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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | zeus_CapitalExpendituresAbstract
Namespace Prefix: | zeus_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration