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Note 5 - Debt (Details) (USD $) | 3 Months Ended | 0 Months Ended | 1 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2015 | Apr. 02, 2015 | Jul. 31, 2011 | Dec. 31, 2014 | Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2014
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Prepaid Expense and Other Assets, Current | $ 15,359,000 us-gaap_PrepaidExpenseAndOtherAssetsCurrent |  |  | $ 20,434,000 us-gaap_PrepaidExpenseAndOtherAssetsCurrent |  |  |
Derivative, Fixed Interest Rate | 1.21%us-gaap_DerivativeFixedInterestRate |  |  |  |  |  |
Effect of Swap Interest Rate Agreement | 3.46%zeus_EffectOfSwapInterestRateAgreement |  |  |  |  |  |
Availability Dollar Amount [Member] | ABL Credit Facility [Member] | Asset-Based Revolving Credit Facility Due June 30, 2019 [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Line of Credit Facility Covenant Terms Monetary | 30,000,000 zeus_LineOfCreditFacilityCovenantTermsMonetary / us-gaap_CreditFacilityAxis = zeus_AssetBasedRevolvingCreditFacilityDueJune302019Member / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember / us-gaap_StatementScenarioAxis = zeus_AvailabilityDollarAmountMember |  |  |  |  |  |
ABL Credit Facility [Member] | Minimum [Member] | Base Rate [Member] | Asset-Based Revolving Credit Facility Due June 30, 2019 [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 0.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = zeus_AssetBasedRevolvingCreditFacilityDueJune302019Member / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableRateAxis = us-gaap_BaseRateMember |  |  |  |  |  |
ABL Credit Facility [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Asset-Based Revolving Credit Facility Due June 30, 2019 [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = zeus_AssetBasedRevolvingCreditFacilityDueJune302019Member / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |
ABL Credit Facility [Member] | Maximum [Member] | Base Rate [Member] | Asset-Based Revolving Credit Facility Due June 30, 2019 [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 0.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = zeus_AssetBasedRevolvingCreditFacilityDueJune302019Member / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableRateAxis = us-gaap_BaseRateMember |  |  |  |  |  |
ABL Credit Facility [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Asset-Based Revolving Credit Facility Due June 30, 2019 [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 3.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = zeus_AssetBasedRevolvingCreditFacilityDueJune302019Member / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |
ABL Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Term Loan [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Long-term Line of Credit |  |  |  |  | 53,200,000 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = zeus_TermLoanMember / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |
ABL Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Term Loan [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Long-term Line of Credit |  |  |  |  |  | 53,200,000 us-gaap_LineOfCredit / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = zeus_TermLoanMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
ABL Credit Facility [Member] | Term Loan [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Other Long-term Debt |  |  |  |  |  |  | 44,500,000 us-gaap_OtherLongTermDebt / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = zeus_TermLoanMember
ABL Credit Facility [Member] | Asset-Based Revolving Credit Facility Due June 30, 2016 [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  | 315,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = zeus_AssetBasedRevolvingCreditFacilityDueJune302016Member / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember
ABL Credit Facility [Member] | Asset-Based Revolving Credit Facility Due June 30, 2019 [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 365,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = zeus_AssetBasedRevolvingCreditFacilityDueJune302019Member / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember |  |  |  |  |  |
Line of Credit Facility, Current Borrowing Capacity | 365,000,000 us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity / us-gaap_CreditFacilityAxis = zeus_AssetBasedRevolvingCreditFacilityDueJune302019Member / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember |  |  |  |  |  |
Line of Credit Facility, Covenant Terms, Percentage of Revolver Commitments | 10.00%zeus_LineOfCreditFacilityCovenantTermsPercentageofRevolverCommitments / us-gaap_CreditFacilityAxis = zeus_AssetBasedRevolvingCreditFacilityDueJune302019Member / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember |  |  |  |  |  |
Balance Required for Compliance with Revolver Commitments | 36,500,000 zeus_BalanceRequiredForComplianceWithRevolverCommitments / us-gaap_CreditFacilityAxis = zeus_AssetBasedRevolvingCreditFacilityDueJune302019Member / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember |  |  |  |  |  |
ABL Credit Facility [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity | 103,000,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember |  |  |  |  |  |
Debt Instrument, Periodic Payment, Principal |  | 840,000 us-gaap_DebtInstrumentPeriodicPaymentPrincipal / us-gaap_LineOfCreditFacilityAxis = zeus_ABLCreditFacilityMember |  |  |  |  |
Asset-Based Revolving Credit Facility Due June 30, 2019 [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Line of Credit Facility Covenant Terms EBITDA Ratio | 1.00 zeus_LineOfCreditFacilityCovenantTermsEBITDARatio / us-gaap_LineOfCreditFacilityAxis = zeus_AssetBasedRevolvingCreditFacilityDueJune302019Member |  |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Derivative Premium Rate | 1.75%zeus_DerivativePremiumRate / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Derivative Premium Rate | 2.25%zeus_DerivativePremiumRate / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |  |
Chicago Tube and Iron Company Acquisition [Member] | Industrial Revenue Bond [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Liabilities Incurred |  |  | 5,900,000 us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred / us-gaap_BusinessAcquisitionAxis = zeus_ChicagoTubeAndIronCompanyAcquisitionMember / us-gaap_DebtInstrumentAxis = zeus_IndustrialRevenueBondMember |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 0.14%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_BusinessAcquisitionAxis = zeus_ChicagoTubeAndIronCompanyAcquisitionMember / us-gaap_DebtInstrumentAxis = zeus_IndustrialRevenueBondMember |  |  |  |  |  |
Amortized Banking Fees [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Prepaid Expense and Other Assets, Current | 3,300,000 us-gaap_PrepaidExpenseAndOtherAssetsCurrent / us-gaap_FairValueByAssetClassAxis = zeus_AmortizedBankingFeesMember |  |  |  |  |  |
Interest Rate Swap [Member] |  |  |  |  |  |  |
Note 5 - Debt (Details) [Line Items] |  |  |  |  |  |  |
Long-term Line of Credit | 37,900,000 us-gaap_LineOfCredit / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |  |  |  |  |  |
Fixed Rate Interest Hedge, Notional Monthly Decrease | $ 729,000 zeus_FixedRateInterestHedgeNotionalMonthlyDecrease / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |  |  |  |  |  |

X
- Definition Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Including both current and noncurrent portions, carrying amount as of the balance sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 8 -Article 5 + Details
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- Definition The minimum commitments or obligations by the company that would require the Company to maintain certain EBITDA ratios under the revolver commitments. + References No definition available. + Details
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